"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. Summary After Dr. Sara Tancredi tells Warden Pope about the burnt fragment of a guard's uniform found in Michael's burn, Pope questions Michael about it. When he refuses to answer, Michael is sent to the Solitary Housing Unit (SHU), where Lincoln was also being held. Lincoln is worried about Michael's sanity while Michael has trouble remembering some parts of the prison schematics. While in solitary, Michael appears to have an emotional breakdown. He begins punching the wall repeatedly, fists bleeding, and repeating the words "I put my blood into this." The P.I. works in