PA: Due to some graphic content, viewer discretion is advised.

VERONICA AND NICK GET AN EXPLOSIVE WARNING; A PART OF MICHAEL�S PLAN IS MORE GUARDED THAN HE THOUGHT; BELLICK IS DETERMINED TO FIND A KILLER; LJ GOES ON THE LAM; THE CONSPIRACY CLAIMS THREE MORE LIVES; AND THE MYSTERY WOMAN�S IDENTITY IS REVEALED ON �PRISON BREAK� MONDAY, OCTOBER 31, ON FOX

Michael�s plan hits a snag when he discovers an old storage shed crucial to the escape has been turned into the guard�s break room. Veronica and Nick get an explosive warning to back off their investigation to prove Lincoln�s innocence; LJ goes on the run; the conspiracy claims three more lives; and the identity of the mystery woman calling the shots is revealed on �The Old Head� episode of PRISON BREAK airing Monday, Oct. 31 (8:00-9:00 PM ET/PT) on FOX. (PB-108) (TV-14 D, L, V)

Cast: Dominic Purcell as Lincoln Burrows; Wentworth Miller as Michael Scofield; Robin Tunney as Veronica Donovan; Amaury Nolasco as Fernando Sucre; Sarah Wayne Callies as Dr. Sara Tancredi; Stacy Keach as Warden Henry Pope; Peter Stormare as John Abruzzi; Wade Williams as Officer Brad Bellick; Paul Adelstein as Special Agent Paul Kellerman; Robert Knepper as T-Bag; Marshall Allman as LJ Burrows

Guest Cast: Jessalyn Gilsig as Lisa; Frank Grillo as Nick Sarvinn; Danny McCarthy as Special Agent Danny Hale; Muse Watson as Westmoreland;

[EDITOR�S NOTE: ARRESTED DEVELOPMENT and KITCHEN CONFIDENTIAL are preempted this night.]