"J-Cat" is the seventeenth episode of the television series Prison Break, written by Karyn Usher and directed by Guy Ferland. It was first aired on April 10, 2006. The episode directly follows the events in the fifteenth episode, "By the Skin and the Teeth". It also marks the return of Silas Weir Mitchell (who plays Charles "Haywire" Patoshik) as a guest star.
The P.I. works in the guard room are coming to an end by surprise. Being the only one who has access to the hole behind the toilet in his cell, Sucre is forced by the other escape team members to conceal the hole in the guard's break room. He asks T-Bag to get a pair of panties from a crossdresser by offering a sexual favor. T-Bag is reluctant but he gets the panties.
Veronica and Nick use rope to lower LJ into the well where Quinn's body is to grab Quinn's cell phone. LJ sees Kellerman's name etched on the well wall and realizes what part Kellerman played, but doesn't say anything to Veronica or Nick. Later, they leave LJ in the apartment. LJ uses a quick computer research to find Kellerman's house. He breaks in while no one is home, but a neighbor woman sees the break in and calls the police. When Kellerman returns home, LJ pulls a gun on him. Kellerman is shot, but not seriously injured. The police arrive and LJ is arrested.
Meanwhile, Sucre manages to conceal the hole but is caught when making his way back to the cell. Bellick interrogates him and when Sucre denies an escape attempt, he demands a reason. After Bellick finds the crossdresser's panties hidden around Sucre's ankle, Sucre says they were his girlfriend's and uses them as his excuse: "She wanted to let me know she's thinking of me." He is also thrown into solitary.
Lincoln tells a guard to check on Michael after he stops responding. The guard immediately calls for medical help as Michael is found staring blankly at the wall with bloody fists. He is cleaned up by Sara and put into the psych ward. Michael then snaps out of his disturbed state, revealing it was all a ploy in order to talk to Haywire. Michael asks Haywire to remember the tattoo on his (Michael's) back because the map had been burned off. Haywire just replies by asking "Who are you?", revealing that he is apparently back on his medication.