<P> Key plotlines in the fifth season include the 100th episode (directed by David Boreanaz), which flashes back to Booth and Brennan's first assignment that showcases their original relationship, which leads Booth to confess his true feelings to Brennan . The 100th episode also features the return of Eric Millegan as Zack Addy . Angela and Hodgins rekindle their love after spending some quality time together in a jail cell, and decide to get married . Heather Taffet aka the Gravedigger is put on trial for her crimes, and the team's strong case against her leads to a conviction where she is finally put away, but warns Brennan "that it's not over". In the season finale, many of the characters begin to embark on trips that will take them out of the country for one year, intending to return and pick things up where they left off one year from that day . Temperance, along with Daisy Wick, go to the Maluku Islands to study a full set of interspecies hominid remains that could be a crucial link in the evolutionary chain . Booth returns to the Army as a Sergeant Major to train soldiers in apprehending insurgents . Meanwhile, newlywed Angela and Hodgins decide to travel . </P> <P> The season was originally supposed to include a black - and - white noir - inspired episode, but the idea was dropped after another Fox series, Fringe, did a similar episode . The episode "The Gamer in the Grease" features promotion of the film Avatar . The cross promotion was suggested by Avatar producer Jon Landau and the episode features recurring actor Joel David Moore, who also appears in Avatar as one of the secondary protagonists . </P> <Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> US viewers (millions) </Th> </Tr> <Tr> <Th> 85 </Th> <Td> </Td> <Td> "Harbingers in the Fountain" </Td> <Td> Ian Toynton </Td> <Td> Hart Hanson </Td> <Td> September 17, 2009 (2009 - 09 - 17) </Td> <Td> 5AKY01 </Td> <Td> 10.36 </Td> </Tr> <Tr> <Td_colspan="8"> Booth returns to the FBI after being certified by Dr. Sweets and wonders if his feelings for Brennan are real or if they are just the effects from his brain surgery . Angela's psychic Avalon (Cyndi Lauper) leads Booth and Brennan to a crime regarding bodies being buried under a fountain in Washington, one of which is Avalon's younger sister . </Td> </Tr> <Tr> <Th> 86 </Th> <Td> </Td> <Td> "The Bond in the Boot" </Td> <Td> Alex Chapple </Td> <Td> Michael Peterson </Td> <Td> September 24, 2009 (2009 - 09 - 24) </Td> <Td> 5AKY02 </Td> <Td> 9.12 </Td> </Tr> <Tr> <Td_colspan="8"> Booth and Brennan investigate a highly classified case regarding the death of a man and a CIA analyst, which revolves around the unknown contents of a briefcase . Funding is cut back at the Jeffersonian, leaving Wendell's (Michael Grant Terry) scholarship at risk, but anonymous donations are made, saving his internship . Booth deals with effects of his coma, causing him to relearn how to fix the broken pipes for his sink, instead of paying for a plumber . </Td> </Tr> <Tr> <Th> 87 </Th> <Td> </Td> <Td> "The Plain in the Prodigy" </Td> <Td> Allan Kroeker </Td> <Td> Karine Rosenthal </Td> <Td> October 1, 2009 (2009 - 10 - 01) </Td> <Td> 5AKY03 </Td> <Td> 9.43 </Td> </Tr> <Tr> <Td_colspan="8"> The team investigates the remains of a teenage Amish boy who disappeared two months prior to Rumspringa, where he would explore the outside world . They later discover the boy was a piano prodigy and kept it as a secret from his family . Cam deals with parenting issues as she believes her stepdaughter Michelle might be having sex, leading Booth to help out . </Td> </Tr> <Tr> <Th> 88 </Th> <Td> </Td> <Td> "The Beautiful Day in the Neighborhood" </Td> <Td> Gordon C. Lonsdale </Td> <Td> Janet Lin </Td> <Td> October 8, 2009 (2009 - 10 - 08) </Td> <Td> 5AKY04 </Td> <Td> 10.29 </Td> </Tr> <Tr> <Td_colspan="8"> The team investigates the remains that were found in a barbecue pit during a suburban neighborhood block party, leading to several secrets about the residents in the neighborhood being exposed . Iranian intern Arastoo confesses to everyone that he has been faking his accent and explains why he did so . Booth's son Parker seems concerned that his dad does not have a girlfriend . </Td> </Tr> <Tr> <Th> 89 </Th> <Td> 5 </Td> <Td> "A Night at the Bones Museum" </Td> <Td> Jeannot Szwarc </Td> <Td> Carla Kettner & Josh Berman </Td> <Td> October 15, 2009 (2009 - 10 - 15) </Td> <Td> 5AKY05 </Td> <Td> 9.59 </Td> </Tr> <Tr> <Td_colspan="8"> A mysteriously charred body that is found on an electrical fence turns out to be a mummified Egyptian royal that was loaned to the Jeffersonian from the Egyptian government . The team investigates as the curator that was prepping the mummy is found murdered . Booth's supervisor, the assistant director of the FBI, Andrew Hacker (Diedrich Bader), shows interest in Brennan and they later go on a date . Sweets convinces Brennan to give Daisy (Carla Gallo) another chance, having her return to the Jeffersonian as an intern . </Td> </Tr> <Tr> <Th> 90 </Th> <Td> 6 </Td> <Td> "The Tough Man in the Tender Chicken" </Td> <Td> Dwight Little </Td> <Td> Dean Lopata </Td> <Td> November 5, 2009 (2009 - 11 - 05) </Td> <Td> 5AKY06 </Td> <Td> 8.66 </Td> </Tr> <Tr> <Td_colspan="8"> When the remains of a local chicken farmer are found mutilated by a nearby river, Booth and Brennan investigate the various suspects, including several animal rights activists who are protesting outside the chicken factory . Angela, feeling bothered by the practices of the chicken farm, asks for donations to save a piglet in which Brennan declines as her belief of saving one will not change anything, causing her to question why they are friends . After Wendell makes a donation to Angela, they kiss and a relationship starts to develop as Angela has now been celibate for five and half months . </Td> </Tr> <Tr> <Th> 91 </Th> <Td> 7 </Td> <Td> "The Dwarf in the Dirt" </Td> <Td> Chad Lowe </Td> <Td> Karyn Usher </Td> <Td> November 12, 2009 (2009 - 11 - 12) </Td> <Td> 5AKY07 </Td> <Td> 10.22 </Td> </Tr> <Tr> <Td_colspan="8"> The team investigate the remains of a person with dwarfism who is found in a sinkhole . The victim was known as "The Iron Leprechaun", who competed in a wrestling league . Booth, still dealing with effects from his brain tumor, has problems with his aim and must be re-certified for FBI marksmanship . He then seeks advice from Dr. Gordon Wyatt (Stephen Fry), who is now a chef, in hopes of overcoming the problem . </Td> </Tr> <Tr> <Th> 92 </Th> <Td> 8 </Td> <Td> "The Foot in the Foreclosure" </Td> <Td> Jeff Woolnough </Td> <Td> Pat Charles </Td> <Td> November 19, 2009 (2009 - 11 - 19) </Td> <Td> 5AKY08 </Td> <Td> 9.88 </Td> </Tr> <Tr> <Td_colspan="8"> When the charred remains of a person are found by a real estate agent during a tour of the house, Booth and Brennan must investigate the mysterious way the person turned to ashes . Booth deals with taking care of his grandfather Hank (Ralph Waite) as he prepares to move in, and Hank gives relationship advice to both Booth and Brennan . </Td> </Tr> <Tr> <Th> 93 </Th> <Td> 9 </Td> <Td> "The Gamer in the Grease" </Td> <Td> Kate Woods </Td> <Td> Dean Lopata </Td> <Td> December 3, 2009 (2009 - 12 - 03) </Td> <Td> 5AKY09 </Td> <Td> 9.92 </Td> </Tr> <Tr> <Td_colspan="8"> The team investigate the death of a pro gamer whose body is found in a grease truck . The victim, Steve Rifton, was the only person to get a perfect score on a popular arcade game, Punky Pong . Intern Colin Fisher (Joel David Moore) invites Hodgins and Sweets to the premiere of the science fiction film Avatar, where each must take turns standing in line . </Td> </Tr> <Tr> <Th> 94 </Th> <Td> 10 </Td> <Td> "The Goop on the Girl" </Td> <Td> Tim Southam </Td> <Td> Carla Kettner </Td> <Td> December 10, 2009 (2009 - 12 - 10) </Td> <Td> 5AKY10 </Td> <Td> 10.90 </Td> </Tr> <Tr> <Td_colspan="8"> A man dressed as Santa Claus wearing an explosive vest is blown up via a radio frequency after robbing a bank, leaving Booth and Brennan to investigate the identity of the bomber and who set off the explosives . Brennan plans on spending Christmas in El Salvador, but her father (Ryan O'Neal) convinces her to stay and spend it with him and her second cousin on her mother's side, Margaret (Zooey Deschanel). After solving the case, the Jeffersonian team attend the funeral of the man that was killed after they discover he was forced into the robbery, comforting the mother who was his only family . The team later celebrate a Christmas dinner at Brennan's . </Td> </Tr> <Tr> <Th> 95 </Th> <Td> 11 </Td> <Td> "The X in the File" </Td> <Td> Allison Liddi - Brown </Td> <Td> Janet Lin </Td> <Td> January 14, 2010 (2010 - 01 - 14) </Td> <Td> 5AKY11 </Td> <Td> 10.67 </Td> </Tr> <Tr> <Td_colspan="8"> Booth and Brennan travel to Roswell, New Mexico, after remains resembling an alien are found in the desert . Hodgins deals with his jealousy after Angela and Wendell confess they are in a relationship . </Td> </Tr> <Tr> <Th> 96 </Th> <Td> 12 </Td> <Td> "The Proof in the Pudding" </Td> <Td> Emile Levisetti </Td> <Td> Bob Harris </Td> <Td> January 21, 2010 (2010 - 01 - 21) </Td> <Td> 5AKY12 </Td> <Td> 11.93 </Td> </Tr> <Tr> <Td_colspan="8"> The Jeffersonian lab is put on lock down by mysterious government agents led by Mr. White (Richard T. Jones) when they demand Brennan and her team identify of cause of death for a highly classified set of remains . The team eventually come to believe the set of remains they are working on are actually that of assassinated President John F. Kennedy . Cam finds a positive pregnancy test in the woman's bathroom and after all the women deny it is theirs, she believes it might be Michelle's (Cam's adopted daughter). After, Angela confesses to Cam that it was actually hers, but did not want anyone else to know . In the interim, Cam had it tested again, and reveals to Angela that it was a false positive, meaning she is not pregnant . </Td> </Tr> <Tr> <Th> 97 </Th> <Td> 13 </Td> <Td> "The Dentist in the Ditch" </Td> <Td> Dwight Little </Td> <Td> Pat Charles & Josh Berman </Td> <Td> January 28, 2010 (2010 - 01 - 28) </Td> <Td> 5AKY13 </Td> <Td> 12.37 </Td> </Tr> <Tr> <Td_colspan="8"> A human skeleton is found in a ditch on an old Civil War battleground and is covered in clay, making it difficult for the team to determine the cause of death . Booth's brother Jared (Brendan Fehr) returns from his travels with a new girlfriend, whom he intends to marry . Feeling suspicious, Booth performs a background check on her, which angers his brother . They later reconcile, where Jared tells him they do not keep secrets from each other and asks him to be his best man . </Td> </Tr> <Tr> <Th> 98 </Th> <Td> 14 </Td> <Td> "The Devil in the Details" </Td> <Td> Ian Toynton </Td> <Td> Michael Peterson </Td> <Td> February 4, 2010 (2010 - 02 - 04) </Td> <Td> 5AKY14 </Td> <Td> 12.37 </Td> </Tr> <Tr> <Td_colspan="8"> Booth and Brennan investigate the remains of a demon - like body found in a church that has horns and a tail . The case leads them to Havenhurst Sanitarium, where the victim was committed, as he had schizophrenia . The case causes intern Arastoo Vaziri to talk about his beliefs of good and evil and he reveals a secret he has been keeping for many years . </Td> </Tr> <Tr> <Th> 99 </Th> <Td> 15 </Td> <Td> "The Bones on the Blue Line" </Td> <Td> Chad Lowe </Td> <Td> Carla Kettner </Td> <Td> April 1, 2010 (2010 - 04 - 01) </Td> <Td> 5AKY15 </Td> <Td> 8.44 </Td> </Tr> <Tr> <Td_colspan="8"> While Dr. Sweets is on a subway train, a stranger tells him he has just been cured of leukemia, then the train is thrown off its tracks as a water main breaks, causing havoc inside the train leading to death of the man who had just been cured of cancer . The accident exposes a skeleton that was caused by the flooding, leading Booth and Brennan to investigate . With the release of Brennan's fourth book, a reporter (Seiko Matsuda) interviews her for a Japanese magazine and follows her and the team around . Sweets deals with the near - death experience feeling it was a message to live his life fully, leading him to make a decision about his relationship with Daisy . </Td> </Tr> <Tr> <Th> 100 </Th> <Td> 16 </Td> <Td> "The Parts in the Sum of the Whole" </Td> <Td> David Boreanaz </Td> <Td> Hart Hanson </Td> <Td> April 8, 2010 (2010 - 04 - 08) </Td> <Td> 5AKY16 </Td> <Td> 9.99 </Td> </Tr> <Tr> <Td_colspan="8"> Booth and Brennan set the record straight regarding when they first met as Dr. Sweets has completed his book detailing the relationship between the two which he believes they are in love . Sweets is worried that this information could invalidate his book so he has them tell the story of when they first met, which happened six years earlier . The story includes how Angela came to work for Brennan at the Jeffersonian; the first time Brennan, Hodgins and her grad student Zack (Eric Millegan) worked on fresh remains; and that Booth and Brennan shared a kiss during their first case and Brennan decided not to spend the night with him as they were both drunk . </Td> </Tr> <Tr> <Th> 101 </Th> <Td> 17 </Td> <Td> "The Death of the Queen Bee" </Td> <Td> Allan Kroeker </Td> <Td> Mark Lisson </Td> <Td> April 15, 2010 (2010 - 04 - 15) </Td> <Td> 5AKY17 </Td> <Td> 9.92 </Td> </Tr> <Tr> <Td_colspan="8"> An investigation leads Brennan back to her old high school, where a classmate of Brennan's is found murdered, similar to another girl in her class 15 years prior . Booth and Brennan go undercover as a married couple during the high school reunion to try to discover the killer, which includes several of her previous classmates . Brennan is helped by her only friend from high school, the janitor, Ray Buxley (Robert Englund), to help find the killer . Back at the lab, Wendell accidentally finds out from Hodgins that Angela believed she was pregnant and did not tell him . Wendell then tells her would have taken his share of the responsibility and consequences . Later, Angela ends their relationship as she felt his answer to the pregnancy was that it was his obligation . After the case, the team get together at the bar sharing their high school experience . Brennan expresses she was glad she attended the reunion and that she realizes how lucky she is to have the friendship she has today . </Td> </Tr> <Tr> <Th> 102 </Th> <Td> 18 </Td> <Td> "The Predator in the Pool" </Td> <Td> Dwight Little </Td> <Td> Karyn Usher </Td> <Td> April 22, 2010 (2010 - 04 - 22) </Td> <Td> 5AKY18 </Td> <Td> 9.01 </Td> </Tr> <Tr> <Td_colspan="8"> A case leads Booth and Brennan to an aquarium where the remains were found inside a shark . The case is brought to them by Dr. Catherine Bryar (Rena Sofer) of the National Oceanic and Atmospheric Administration, who seems to show an interest in Booth . Both Booth and Brennan try to move on into romantic relationships as Brennan goes on another date with Andrew Hacker, and Booth asks out Catherine after the case is solved . </Td> </Tr> <Tr> <Th> 103 </Th> <Td> 19 </Td> <Td> "The Rocker in the Rinse Cycle" </Td> <Td> Jeff Woolnough </Td> <Td> Karine Rosenthal </Td> <Td> April 29, 2010 (2010 - 04 - 29) </Td> <Td> 5AKY19 </Td> <Td> 9.28 </Td> </Tr> <Tr> <Td_colspan="8"> When the body of thrill - seeker is found in a hotel laundry machine, Booth and Brennan investigate the place he was last seen--a rock and roll fantasy camp, hosted by the prolific rocker Simon Graham (Michael Des Barres). Cam looks for a gynecologist for her adoptive daughter Michelle . Cam later goes out on a date with Dr. Lidner (Elon Gold) after he asks her out . </Td> </Tr> <Tr> <Th> 104 </Th> <Td> 20 </Td> <Td> "The Witch in the Wardrobe" </Td> <Td> François Velle </Td> <Td> Kathy Reichs </Td> <Td> May 6, 2010 (2010 - 05 - 06) </Td> <Td> 5AKY20 </Td> <Td> 9.05 </Td> </Tr> <Tr> <Td_colspan="8"> The remains of two witches, one of which is from the Salem witch trials from the 1600s and the other a modern day Wiccan, are discovered in the remains of a burnt out cabin . Booth and Brennan investigate the world of Wicca, including discovering the Wiccan group of which the victim was a part . Hodgins and Angela wind up in jail after some reckless driving and have to work the case from the jail cell . After spending quality time together, they realize they are still in love . Hodgins subsequently proposes to Angela and they are married by the judge who hears their case . </Td> </Tr> <Tr> <Th> 105 </Th> <Td> 21 </Td> <Td> "The Boy with the Answer" </Td> <Td> Dwight Little </Td> <Td> Stephen Nathan </Td> <Td> May 13, 2010 (2010 - 05 - 13) </Td> <Td> 5AKY21 </Td> <Td> 9.20 </Td> </Tr> <Tr> <Td_colspan="8"> The Jeffersonian team and prosecutor Caroline Julian (Patricia Belcher) work to convict Heather Taffet aka the Gravedigger (Deirdre Lovejoy) who is defending herself at her trial . Brennan, Booth, and Hodgins are forced to drop their own charges against Taffet once they discover the missing remains of a young boy who was killed by the Gravedigger, so they could work and testify against Taffet . Believing Taffet will not be convicted, Brennan's father tries to kill her with a sniper rifle, but Booth is able to stop him and Max is jailed until the trial is over . After several attempts at finding evidence that Taffet successfully argues against, Hodgins discover a dust mite from the boy's mouth that contains the DNA of Taffet, left there when he bit her . This evidence proves successful and the jury convicts Taffet of kidnapping and murder, but Taffet warns Brennan "that it's not over". The team later celebrate over drinks at the Founding Fathers bar . </Td> </Tr> <Tr> <Th> 106 </Th> <Td> 22 </Td> <Td> "The Beginning in the End" </Td> <Td> Ian Toynton </Td> <Td> Hart Hanson & Stephen Nathan </Td> <Td> May 20, 2010 (2010 - 05 - 20) </Td> <Td> 5AKY22 </Td> <Td> 9.21 </Td> </Tr> <Tr> <Td_colspan="8"> The team investigate the remains of a hoarder whose body fell through the floor to another apartment when it collapsed due to major termite damage . They must sift through all his belongings to try to determine the cause of death . Hodgins is asked a favor from Angela's father (Billy Gibbons) to try to steal back a car he lost at a card game, although it just turns out to be a test to see if he would do it . Daisy is accepted to go to the Maluku Islands to study a full set of interspecies hominid remains that could be a crucial link in the evolutionary chain . She and Sweets discuss if he should go with her, as she will be gone for a year, but Sweets stays and they say their goodbyes at the airport . Brennan is also accepted to take part in the project, but is unsure if she wants to leave . Booth is contacted by the Army to return as a Sergeant Major to train soldiers in apprehending insurgents, but also is unsure if he wants to go . Later, the Jeffersonian team makes decisions that will have them apart for a year: Angela and Hodgins travel to Paris; Brennan and Daisy go to the Maluku Islands; and Booth goes to Afghanistan to train soldiers . </Td> </Tr> </Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> US viewers (millions) </Th> </Tr>

When does angela and hodgins get back together