Ben Loggins

Michael and Sarah become more than strangers on a train en route to confront the president; Mahone recruits a new ally in his bid to capture the fugitives; T-Bag puts on a happy face; a fourth escapee takes a fall.

Walker tells disenchanted orphans about an 1876 Ranger who saves a child and regains the Christmas spirit.

A senator pleads with Walker to head up a new task force to bring a brilliant criminal mastermind, accused of hacking into federal law enforcement computers, to justice.

Alex tries to build a case against gang members who use arson to intimidate their witnesses and attempt to kill firefighters who respond.