<P> Like the previous three seasons, the majority of filming takes place in the Portland, Oregon area . Filming for the season began on July 16, 2014 . </P> <P> The season aired simultaneously on CTV in Canada . It is currently airing on Universal Channel in Southeast Asia . In Australia, it began airing on Fox8 on January 7, 2015 . It premiered on Watch in the United Kingdom and Ireland on January 28, 2015 . </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> U.S. viewers (millions) </Th> </Tr> <Tr> <Th> 67 </Th> <Td> </Td> <Td> "Thanks for the Memories" </Td> <Td> Norberto Barba </Td> <Td> David Greenwalt & Jim Kouf </Td> <Td> October 24, 2014 (2014 - 10 - 24) </Td> <Td> 401 </Td> <Td> 5.28 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Juliette struggle with the loss of his powers, while Monroe and Rosalee postpone their honeymoon to help out . Nick, Hank, and Trubel investigate a Gedächtnis - Esser (octopus - like wesen), as Capt . Renard lies in critical condition . Meanwhile, the Grimm Diaries that Trubel owns in the guest room of Nick's house attract unwanted attention from Wu and Special Agent Chavez . </P> Opening quote: "Knowledge is power ." </Td> </Tr> <Tr> <Th> 68 </Th> <Td> </Td> <Td> "Octopus Head" </Td> <Td> Terrence O'Hara </Td> <Td> David Greenwalt & Jim Kouf </Td> <Td> October 31, 2014 (2014 - 10 - 31) </Td> <Td> 402 </Td> <Td> 4.54 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Capt . Renard dies while in the hospital, but only for a moment as his mother, Elizabeth, revives him with her powers and abilities . Meanwhile in Austria, Viktor locks Adalind in a Hexenbiest - proof dungeon . Nick and Hank send Trubel by herself to keep an eye on the Gedächtnis Esser . </P> Opening quote: "A man's real possession is his memory . In nothing else is he rich, In nothing else he is poor ." </Td> </Tr> <Tr> <Th> 69 </Th> <Td> </Td> <Td> "The Last Fight" </Td> <Td> Paul Kaufman </Td> <Td> Thomas Ian Griffith </Td> <Td> November 7, 2014 (2014 - 11 - 07) </Td> <Td> 403 </Td> <Td> 4.93 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate a Wesen boxing gym while Elizabeth helps Monroe and Rosalee search for a way to restore Nick's powers . Trubel keeps her eyes on a young wesen boxer in his teens named Clay who is a Heftigauroch (bull - like wesen), and his wesen boxing trainer named Stan who is a Schinderdiv (warthog - like wesen). </P> Opening quote: "Stars, hide your fires; let not light see my black and deep desires ." </Td> </Tr> <Tr> <Th> 70 </Th> <Td> </Td> <Td> "Dyin' on a Prayer" </Td> <Td> Tawnia McKiernan </Td> <Td> Sean Calder </Td> <Td> November 14, 2014 (2014 - 11 - 14) </Td> <Td> 404 </Td> <Td> 5.01 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate a possible homicide where the victim was Keith Harrow, Sara Fisher's abusive ex-husband & a wesen called siegbarste (ogre - like wesen). It appears that he has died from asphyxiation by clay . It turns out he was killed by a Golem who was called upon by the Rabbi brother of the victim's ex-wife, Ben Fisher . Trubel's presence still doesn't sit well with Wu . Elizabeth finds a way to restore Nick's Grimm powers, but requires a special something to make it happen . </P> Opening quote: "Oh, remember that you fashioned me out of clay! Will you then bring me down to dust?" </Td> </Tr> <Tr> <Th> 71 </Th> <Td> 5 </Td> <Td> "Cry Luison" </Td> <Td> Eric Laneuville </Td> <Td> Michael Golamco </Td> <Td> November 21, 2014 (2014 - 11 - 21) </Td> <Td> 405 </Td> <Td> 5.43 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate a vehicular manslaughter case where the driver turns out to be a rich heir being driven to madness by her Luison (Wolf - like wesen) quadruplet husband named Gabriel and his 3 brothers named Matheus, Javier and Julio . Bud enlists Trubel to deal with a possible threat to Nick's life . Nick and Juliette deeply consider whether or not to regain his Grimm abilities, since the process itself comes with a significant catch . But when Monroe and Rosalee are threatened by the Wolfsangel, Juliette tells Nick that he must become a Grimm again . </P> Opening quote: "A liar will not be believed, even when he speaks the truth ." </Td> </Tr> <Tr> <Th> 72 </Th> <Td> 6 </Td> <Td> "Highway of Tears" </Td> <Td> John Behring </Td> <Td> Alan DiFiore </Td> <Td> November 28, 2014 (2014 - 11 - 28) </Td> <Td> 406 </Td> <Td> 5.17 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Juliette tells Nick that he needs to be a Grimm again after the most recent attack on Monroe and Rosalee regarding their marriage . Later, Nick and Hank investigate a weird and unusual sacrificing wesen ritual by a Phansigar (Komodo dragon - like wesen). Nick finally gets his Grimm power abilities back . Trubel deals with being watched by another agent who works for Chavez, as well as Josh Porter arriving on the scene . </P> Opening quote: "There is no mercy in you . You cut off the heads of men and women and these you wear as a garland around your neck ." </Td> </Tr> <Tr> <Th> 73 </Th> <Td> 7 </Td> <Td> "The Grimm Who Stole Christmas" </Td> <Td> John Gray </Td> <Td> Dan E. Fesman </Td> <Td> December 5, 2014 (2014 - 12 - 05) </Td> <Td> 407 </Td> <Td> 4.96 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Monroe has a unique Christmas surprise for Rosalee . Trubel and Josh work together to track down the Wesenrein with gleichheit (equality) masks who keep threatening against Monroe and Rosalee's mischehen (mixed marriage). Meanwhile, Nick and Hank investigate a series of strange home invasions and uncover a bizarre Wesen phenomenon called kallikantzaroi (malevolent goblins - like wesen), with a rare genetic disease disorder during adolescence that wreaks havoc on Christmas unless they eat fruitcake until sunrise . Then the children of Indole Gentile (deer - like wesen) are back to normal . </P> Opening quote: "I have but to swallow this, and be for the rest of my days persecuted by a legion of goblins, all of my own creation . Humbug, I'll tell you; humbug!" </Td> </Tr> <Tr> <Th> 74 </Th> <Td> 8 </Td> <Td> "Chupacabra" </Td> <Td> Aaron Lipstadt </Td> <Td> Brenna Kouf </Td> <Td> December 12, 2014 (2014 - 12 - 12) </Td> <Td> 408 </Td> <Td> 5.07 </Td> </Tr> <Tr> <Td_colspan="8"> <P> An unsuspecting traveler brings a blood - sucking cryptid--the legendary "El Chupacabra"--to Portland, and Nick and Hank investigate . Wu confronts Nick about what he has seen about the Grimm Books and Nick's odd behavior . Monroe and Rosalee prepare to embark on their honeymoon, but are threatened once again by the Wesenrein . </P> <P> Opening quote: "Cuide su rebaño, nunca deje su lado . Cuide su sangre, el Chupacabra tiene hambre ." </P> ("Take care of your flock, never leave their side . Watch your blood, for the chupacabra is hungry .") </Td> </Tr> <Tr> <Th> 75 </Th> <Td> 9 </Td> <Td> "Wesenrein" </Td> <Td> Hanelle Culpepper </Td> <Td> Thomas Ian Griffith </Td> <Td> January 16, 2015 (2015 - 01 - 16) </Td> <Td> 409 </Td> <Td> 4.62 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank recruit Wu to help after revealing him to the world of Wesen . After Monroe gets kidnapped by the Wesenrein, the team must find out where he is before he is sacrificed and killed . Juliette's attempt to cope with transforming into a Hexenbiest is put on hold while she tries to tend to an anxious Rosalee . </P> Opening quote: "He had them brought before the court, and a judgment was handed down ." </Td> </Tr> <Tr> <Th> 76 </Th> <Td> 10 </Td> <Td> "Tribunal" </Td> <Td> Peter Werner </Td> <Td> David Greenwalt & Jim Kouf </Td> <Td> January 23, 2015 (2015 - 01 - 23) </Td> <Td> 410 </Td> <Td> 5.02 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Monroe is on the trial by the Wesenrein for a ritual that is performed called the "Tribunal". Nick and Hank train Wu to deal with woged wesen, which allows him to confront Officer Jesse Acker, who is secretly a part of the Wesenrein, but without leverage, he cannot force him to turn on the group . Juliette and Rosalee scour the wedding guest list, provided by Trubel, with help from Bud, to find anyone who would have exposed them to the Wesenrein . </P> Opening quote: "May the God of Vengeance now yield me His place to punish the wicked ." </Td> </Tr> <Tr> <Th> 77 </Th> <Td> 11 </Td> <Td> "Death Do Us Part" </Td> <Td> Constantine Makris </Td> <Td> Jeff Miller </Td> <Td> January 30, 2015 (2015 - 01 - 30) </Td> <Td> 411 </Td> <Td> 4.85 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Monroe and Rosalee finally leave Portland to head and embark on their honeymoon, but this doesn't mean trouble somewhat isn't stirring in Portland . Nick, Hank, and Wu investigate a shocking homicide of a ghost hunter at a supposedly abandoned residence . Portland residents think it is haunted by a ghost; but Nick, Hank and Wu discover that an electric eel - like wesen called a Matanca Zumbido is responsible . Juliette's startling revelation to Captain Renard leads her to a longtime family friend from his past, a mystical woman named Henrietta (Garcelle Beauvais). </P> Opening quote: "He felt now that he was not simply close to her, but that he did not know where he ended and she began ." </Td> </Tr> <Tr> <Th> 78 </Th> <Td> 12 </Td> <Td> "Maréchaussée" </Td> <Td> Eric Laneuville </Td> <Td> David Greenwalt & Jim Kouf </Td> <Td> February 6, 2015 (2015 - 02 - 06) </Td> <Td> 412 </Td> <Td> 4.67 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate the murders of Fortune Tellers named Laszlo & Mabel Kurlon . Laszlo is a ferret - like wesen called a Fado . The murders involve the Wesen Council which leads Nick and Hank to a mysterious "manticore" bounty hunter named Jonathon Wilde (Arnold Vosloo) from Archer City, Texas . Juliette meets up with Henrietta (Garcelle Beauvais) and is given bad news . Viktor and Adalind head back to Portland from Austria to find baby Diana's whereabouts . </P> Opening quote: "Everyone sees what you appear to be, few experience what you really are ." </Td> </Tr> <Tr> <Th> 79 </Th> <Td> 13 </Td> <Td> "Trial by Fire" </Td> <Td> Norberto Barba </Td> <Td> Sean Calder </Td> <Td> February 13, 2015 (2015 - 02 - 13) </Td> <Td> 413 </Td> <Td> 4.86 </Td> </Tr> <Tr> <Td_colspan="8"> <P> During an investigation of an arson case that involves an Excandesco (phoenix - like wesen), Nick is forced to turn to a Bauerschwein arson investigator Lt. Peter Orson (Daniel Roebuck) whom he had put behind bars . Viktor teaches Adalind about well - played diplomacy . </P> Opening quote: "And glory like the phoenix midst her fires, Exhales her odours, blazes, and expires ." </Td> </Tr> <Tr> <Th> 80 </Th> <Td> 14 </Td> <Td> "Bad Luck" </Td> <Td> Terrence O'Hara </Td> <Td> Thomas Ian Griffith </Td> <Td> March 20, 2015 (2015 - 03 - 20) </Td> <Td> 414 </Td> <Td> 4.78 </Td> </Tr> <Tr> <Td_colspan="8"> <P> After Nick finds out that Juliette has become a Hexenbiest, he visits Henrietta, who says there is no cure and that Nick must either kill Juliette or accept her new status . He cannot cope with the change though, leading Juliette to leave . Meanwhile, Nick, Hank, and Wu investigate the murder of a teenager named Peter whose foot was cut off by Leporem Ventor as Vulpesmyrca (Black Fox like Wesen). They discover the victim was a Willahara (rabbit like wesen), whose foot was cut off as he woged so it could be used by a couple to improve their fertility . Monroe and Rosalee go undercover to a Wesen fertility clinic to find the killer . Adalind meets Renard, who says he knows of Juliette's change and that he sent her to Henrietta to learn more . Adalind pays Henrietta a visit to understand the extent of Juliette's powers, but instead learns that she is pregnant with Nick's child . </P> Opening quote: "No one is so thoroughly superstitious as the godless man ." </Td> </Tr> <Tr> <Th> 81 </Th> <Td> 15 </Td> <Td> "Double Date" </Td> <Td> Karen Gaviola </Td> <Td> Brenna Kouf </Td> <Td> March 27, 2015 (2015 - 03 - 27) </Td> <Td> 415 </Td> <Td> 4.93 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate a crime scene in the middle of a bizarre love triangle involved a flatworm like wesen called huntha lami muuaji . Captain Renard seeks Monroe and Rosalee's help to stop phantom bleeding when he was shot by Weston Steward . Adalind asks for a favor that could change the course of Juliette's relationship with Nick . Juliette faces a tough decision about her future with Nick . </P> Opening quote: "One could have called that shape a woman or a boy: for it seemed neither and seemed both ." </Td> </Tr> <Tr> <Th> 82 </Th> <Td> 16 </Td> <Td> "Heartbreaker" </Td> <Td> Rob Bailey </Td> <Td> Dan E. Fesman </Td> <Td> April 3, 2015 (2015 - 04 - 03) </Td> <Td> 416 </Td> <Td> 4.51 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate the homicide of a cyclist named Zack and they meet a foterseele (golden / poison dart frog like wesen) named Bella Turner with a tragic poisonous touch of The Tale of the Frog Prince . When a new member of the Royal family shows up in Portland, Captain Renard and Adalind realize the Royal family have stepped up their efforts to find Diana . Juliette ponders whether to embrace her new self or get rid of it . </P> Opening quote: "How the silly frog does talk! He...can be no companion to any human being!" </Td> </Tr> <Tr> <Th> 83 </Th> <Td> 17 </Td> <Td> "Hibernaculum" </Td> <Td> John Behring </Td> <Td> Michael Golamco </Td> <Td> April 10, 2015 (2015 - 04 - 10) </Td> <Td> 417 </Td> <Td> 4.76 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick, Hank, and Wu are called to investigate a rare Wesen that leaves its victims frozen solid, a hibernacula called Varme Tyv (blue racer snake like wesen); Coluber constrictor foxii . Meanwhile, Juliette starts to feel that she is losing her humanity as she seeks to get revenge against Adalind . Elsewhere, Captain Renard continues to suffer from mysterious bleeding and visions, while Monroe works toward coming to grips with the Wesenrein incident . </P> Opening quote: "Ah! It was colder than ice; it penetrated to his very heart ." </Td> </Tr> <Tr> <Th> 84 </Th> <Td> 18 </Td> <Td> "Mishipeshu" </Td> <Td> Omar Madha </Td> <Td> Alan DiFiore </Td> <Td> April 17, 2015 (2015 - 04 - 17) </Td> <Td> 418 </Td> <Td> 4.54 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank newest investigation is on a homicide in the dark and mysterious path of a local Native American "vision quest" involved mishipeshu (underwater Panther). Juliette's errant behavior lands her in trouble with the wrong side of the law . Monroe and Rosalee are on mission with Captain Renard's assistance . Hank falls prey to a Native American's spirit with yellow eyes . </P> Opening quote: "The Spirit you seek in the water is only a reflection of yourself ." </Td> </Tr> <Tr> <Th> 85 </Th> <Td> 19 </Td> <Td> "Iron Hans" </Td> <Td> Sebastián Silva </Td> <Td> David Greenwalt & Jim Kouf </Td> <Td> April 24, 2015 (2015 - 04 - 24) </Td> <Td> 419 </Td> <Td> 4.66 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate a homicide and they learn it's connected to an age - old Wesen rite of passage . Meanwhile, Juliette meets a surprising ally . Captain Sean Renard battles the darkness within and Nick finds hope for Juliette in the last person he expected: Adalind . </P> Opening quote: "He had killed man, the noblest game of all, and he had killed in the face of the law of club and fang ." </Td> </Tr> <Tr> <Th> 86 </Th> <Td> 20 </Td> <Td> "You Don't Know Jack" </Td> <Td> Terrence O'Hara </Td> <Td> Sean Calder & Michael Golamco </Td> <Td> May 1, 2015 (2015 - 05 - 01) </Td> <Td> 420 </Td> <Td> 4.22 </Td> </Tr> <Tr> <Td_colspan="8"> <P> A string of homicides have the press asking Captain Renard if a Jack the Ripper copycat has arrived in Portland . Monroe traces the mode of operation of the homicides to the Luxembourg Peasants' Revolt . While dealing with the investigation, Nick, Hank, Monroe and Wu deal with a situation they never expected . Meanwhile, Adalind and Rosalee must work together on a last ditch attempt to fix Juliette's condition . Elsewhere, Juliette decides to help her new ally even if it means hurting those around her . </P> Opening quote: "Catch me when you can ..." </Td> </Tr> <Tr> <Th> 87 </Th> <Td> 21 </Td> <Td> "Headache" </Td> <Td> Jim Kouf </Td> <Td> David Greenwalt & Jim Kouf </Td> <Td> May 8, 2015 (2015 - 05 - 08) </Td> <Td> 421 </Td> <Td> 4.21 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Nick and Hank investigate a grisly murder get closer to uncover the identity of the vicious serial killer while Wu's life is in grave danger . Monroe & Rosalee try to help Captain Renard to heal him from his visions and bleeding . Juliette solidifies a new alliance as she works to get revenge which gets Nick's mother killed . Elsewhere, Trubel is back in Portland from Philadelphia to surprise them . </P> Opening quote: "Stronger than lover's love is lover's hate . Incurable, in each the wounds they make ." </Td> </Tr> <Tr> <Th> 88 </Th> <Td> 22 </Td> <Td> "Cry Havoc" </Td> <Td> Noberto Barba </Td> <Td> Thomas Ian Griffith </Td> <Td> May 15, 2015 (2015 - 05 - 15) </Td> <Td> 422 </Td> <Td> 4.74 </Td> </Tr> <Tr> <Td_colspan="8"> <P> After the shocking discovery of his mother's death, Nick is determined to get revenge and take the fight to the royals with Trubel's help . Meanwhile, Juliette's alliance continues to lead her down the dark path . </P> Opening quote: "O, from this time forth, my thoughts be bloody or be nothing worth ." </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> U.S. viewers (millions) </Th> </Tr>

When does nick get his powers back in season 4