As the circumstances surrounding Olivia intensify, the Fringe team investigates a perplexing case involving genetic mutation.

The agents go behind bars to stop a horribly disfiguring virus that is killing prison inmates at an epidemic rate.

Nate Ford reluctantly reassembles the team to pit the local Irish mob against a banker who is gaming a government bailout. If they survive, Nate has to deal with four thieves who've decided he needs them in his life, whether he likes it or not.

Greg gets his driver's license and his first set of wheels thanks to his fast-talking buddy.

Satan (guest star Charles Martin Smith) pays a visit to Maggie's women's club and decides to tempt Shelly (Cynthia Geary) with the prospect of turning the Brick into a casino. With Rob Morrow, Janine Turner.

Four young people out for excitement in a stolen pickup become fugitives from the law when their fun turns into murder and robbery. Rookie Chris Owens is on the case after his partner is killed, but Chris wonders whether the dangers of police life are worth it.