<Ul> <Li> Pamela "Pam" Mahone, née Larson, (played by Callie Thorne) is Mahone's ex-wife who lives in Colorado with their son Cameron (Zachary Friedman). Michael visited her in "Unearthed" and learned that Mahone had kicked her out of the house to prevent her from discovering that he buried Oscar Shales after he murdered him . Mahone later attempts to reconcile, and pleads with her to take him back . She seems happy about this and starts making plans to meet him in Panama, but after being incarcerated, he calls her again and tells her to forget he ever existed . Her son is murdered by Company assassin Wyatt in season 4 as they seek to tie up loose ends, using his death to flush out Mahone . In "Safe and Sound", she meets Mahone and gives him a gun to kill Wyatt . After torturing Wyatt, Mahone makes him apologize to his wife for the murder of Cameron . </Li> <Li> Rita Morgan (played by Heather McComb) is Gretchen's sister . She is introduced in "Blow Out". Although she is taking care of Emily (Regan Licciardello), it is revealed that Gretchen is Emily's biological mother . Rita and Emily are later taken hostage by T - Bag and Self, and Rita is the catalyst of T - Bag's decision to seek redemption when she convinces him not to kill Ralph Becker . </Li> <Li> Jeanette Owens (played by Diana Scarwid) is a homeowner in Toele, Utah, where the $5 million dollars is discovered, beneath the garage . She is taken hostage, along with her daughter, Ann when the escapees discover the location of the long lost millions . </Li> <Li> Ann Owens (played by Alexandra Lydon) the pregnant cop daughter of Jeanette Owens in Toele, Utah, taken hostage when the escapees are digging for the $5 million . </Li> <Li> Judy Pope (played by Deanna Dunagan) is Henry Pope's wife . </Li> <Li> Sasha (played by Kaley Cuoco) is a young girl who, with her boyfriend Matt (Daniel Ross Owens) meets Haywire shortly after his escape and asks him to buy them some beer . Haywire later kills her father, after seeing bruises on her arms from her father's mistreatment . </Li> <Li> Oscar Shales (played by Jimmy Daniels) is a man Mahone hunted and eventually caught, murdering him and burying him in his backyard, leading to the breakdown of his marriage to Pam and drug addiction . </Li> <Li> Sid (played by Laura Scott Wade) is the artist who Michael gets to put his tattoos on him . </Li> <Li> Crab Simmons (played by Tab Baker) is a criminal associate of Lincoln's who appears when he is persuaded to kill a supposed drug dealer in order to settle a $90 k debt . According to his girlfriend Leticia Barris, his murder was covered up as a drug overdose, he' didn't use' as he had a bad heart . </Li> <Li> Kathryn Slattery (played by Romy Rosemont) is a detective in Kansas, who questions Bellick after Geary's death and arrests him for Geary's murder (framed by T - Bag, who killed Geary). </Li> <Li> Dr. Erik Stammel (played by Taylor Nichols) is a psychiatrist, who T - Bag visits, kills and steals his identity to escape to Panama . </Li> <Li> Herb Stanton (played by Michael O'Neill) is Don Self's boss and the director of Homeland Security in Los Angeles . He is introduced in the season 4 episode "Shutdown", where he attempts to cancel the Scylla operation . The character has a prominent role in "Deal or No Deal" where he is initially fooled by Self's ploy to frame the A-team for the theft of Scylla and sets out to re-capture them, though he and Senator Conrad Dallow (David Clennon) later discover the truth . However, in an effort to keep the failed operation a secret, Stanton convinces Dallow to murder the team . He is about to kill Michael when he is shot and killed by a Company operative . </Li> <Li> Leslie Steadman (played by Mary Beth Fisher) is Terrence Steadman's wife . Veronica and Nick (under aliases' Francette Kelly and Dick Sissler), come out of hiding to question her and investigate the conspiracy . </Li> <Li> Richard Sullins (played by Kim Coates) is an FBI Internal Affairs agent who has a serious grudge with Mahone . He is introduced in the episode "Dead Fall" where he investigates Mahone's role in the deaths of John Abruzzi and David "Tweener" Apolskis . He uncovers many inconsistencies in Mahone's report, but is then abruptly called off by a supervisor . However, Sullins returns to the show in the episode "Panama", where makes a deal with Benjamin Miles "C - Note" Franklin to release him in exchange for testimony against Mahone, but Mahone flees the country before Sullins can arrest him . Sullins also appears for three episodes in Season 3 . After Mahone is incarcerated at a Panamanian prison called Sona, Sullins and Agent Lang visits him and convince him to testify against The Company in exchange for a reduced sentence back in the U.S. Sullins arranges for a hearing in "Bang & Burn", but then discovers that Mahone is a drug addict and cannot testify because he is becoming worse at the need of his drugs to control himself . Sullin's character makes one last appearance in The Final Break during the now exonerated Mahone's reinstatement hearing . Sullins initially denies the reinstatement and then attempts to manipulate Mahone to report on the activities of Michael Scofield in exchange for being allowed back into the FBI . </Li> <Li> Frank Tancredi (played by John Heard) is the governor of Illinois and Sara's father . The character's strict policies on crime earned him the nickname "Frontier Justice Frank". He disapproves of Sara's decision to work at Fox River . Tancredi travels to Fox River when his daughter's life is threatened during a prison riot . After the crisis is over, Tancredi seems to have a more strained relationship with her . When Sara asks him to review Lincoln's case on the day of his execution, he ultimately decides not to grant clemency, at the request of the Vice President . After paying for his daughter's bail when she is made an accessory to Michael Scofield's escape, he visits her at her apartment and she apologizes for the problems she has caused for him, but reasserts her belief that Lincoln is innocent, prompting him to take a second look at the Burrows case, and in a later episode he becomes convinced that his daughter is right . Sara soon finds her father dead . Although it looks like suicide, Sara suspects he was murdered, as he had become a threat to the conspiracy . </Li> <Li> Trenchcoat (played by Scott Jaeck) is another of Abruzzi's goons, who blackmails Nick into setting up Veronica for Abruzzi . He later kills Nick and his father after Nick lets Veronica go to Montana to find Terrence Steadman . </Li> <Li> Peter Tucci (played by Tracy Letts) is Caroline Reynold's attorney, who argues the case against exhuming Terrence Steadman's body, when Aldo slips evidence to Judge Kessler, suggesting Steadman's death was faked . </Li> <Li> Gregory White (played by Michael Bryan French) is a high - level administrator at the GATE corporation . Like all of his colleagues, he knows Cole Pfeiffer by reputation only, and does not question anything when T - Bag arrives claiming to be Pfeiffer and readily gives him the office he requested . White leaves for a trip with his wife, but returns after Andrew Blauner disappears . He continues to run the day - to - day activities at GATE until he spots Gretchen Morgan's gun in her bag . Gretchen holds the company hostage before he can call the police . He attempts to make a run for it, only to be gunned down by Gretchen . </Li> <Li> Lucasz Peshcop (played by Howie Johnson) A groundskeeper who walks Veronica inside when she thought that Nick Savirrn took the tape . He is seen later and helps Veronica and Nick take the boxes of papers inside and is burned alive by a trap set up by Paul Kellerman . </Li> </Ul> <Li> Pamela "Pam" Mahone, née Larson, (played by Callie Thorne) is Mahone's ex-wife who lives in Colorado with their son Cameron (Zachary Friedman). Michael visited her in "Unearthed" and learned that Mahone had kicked her out of the house to prevent her from discovering that he buried Oscar Shales after he murdered him . Mahone later attempts to reconcile, and pleads with her to take him back . She seems happy about this and starts making plans to meet him in Panama, but after being incarcerated, he calls her again and tells her to forget he ever existed . Her son is murdered by Company assassin Wyatt in season 4 as they seek to tie up loose ends, using his death to flush out Mahone . In "Safe and Sound", she meets Mahone and gives him a gun to kill Wyatt . After torturing Wyatt, Mahone makes him apologize to his wife for the murder of Cameron . </Li> <Li> Rita Morgan (played by Heather McComb) is Gretchen's sister . She is introduced in "Blow Out". Although she is taking care of Emily (Regan Licciardello), it is revealed that Gretchen is Emily's biological mother . Rita and Emily are later taken hostage by T - Bag and Self, and Rita is the catalyst of T - Bag's decision to seek redemption when she convinces him not to kill Ralph Becker . </Li> <Li> Jeanette Owens (played by Diana Scarwid) is a homeowner in Toele, Utah, where the $5 million dollars is discovered, beneath the garage . She is taken hostage, along with her daughter, Ann when the escapees discover the location of the long lost millions . </Li>

Who plays gretchen's sister in prison break