Albert Jones

In the season finale, the Fringe Division is attacked, Mr. Jones returns, Walter disappears and Massive Dynamics' elusive William Bell (LEONARD NIMOY) is finally introduced.

While he is still in prison, Neal's rival, Matthew Keller (guest star Ross McCall) kidnaps Peter. Neal is forced to make a dangerous deal with Keller's former adversary, Jason Lang (guest star Adam Goldberg), in order to save his partner and friend.

A shooting kills a pregnant banker and leaves her fetus clinging to life.

Sherlock investigates when a wealthy philanthropist believes he was intentionally infected with an incurable illness; Sherlock sends Joan to a suspicious dry cleaners to teach her deductive skills.

When a family friend, an undercover detective, is murdered, Danny embarks on a relentless search for the killer.

While awaiting his arraignment, Naz realizes that his survival rests in the hands of an inmate.