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

BELLICK DIGS HIMSELF INTO A HOLE; MICHAEL GOES TO SARAH FOR HELP; AND VERONICA IS BETRAYED ON AN ALL-NEW "PRISON BREAK" MONDAY, MAY 1, ON FOX

Westmoreland uses Bellick to plug a hole in the escape plan, which forces Michael to move up the breakout timetable. A fearful Tweener pledges his loyalty to Michael and in return may get out of jail for free; Michael feels that he has no choice but to involve Sara in the plan and must betray his father figure; and Veronica finds her life in jeopardy from her closest ally, who has a surprising connection to a Fox River inmate in the "Tonight" episode of PRISON BREAK airing Monday, May 1 (8:00-9:00 PM ET/PT) on FOX. (PB-120) (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; Wade Williams as Captain Brad Bellick; Paul Adelstein as Special Agent Paul Kellerman; Robert Knepper as T-Bag; Marshall Allman as LJ Burrows; Rockmond Dunbar as C-Note

Guest Cast: Patricia Wettig as Vice President Caroline Reynolds; Michelle Forbes as Samantha Brinker; Frank Grillo as Nick Savrinn; Muse Watson as Charles Westmoreland; Lane Garrison as Tweener; Joseph Nunez as Manche