To take down South Boston's Irish Mafia, the police send in one of their own to infiltrate the underworld, not realizing the syndicate has done likewise. While an undercover cop curries favor with the mob kingpin, a career criminal rises through the police ranks. But both sides soon discover there's a mole among them.

Attempting to recover from a recent family trauma by escaping into the woods for a peaceful hiking trip, an ex-lawman and his young son stumble across a dangerous contract killer.

A group of male friends become obsessed with five mysterious sisters who are sheltered by their strict, religious parents.

After a mobster agrees to cooperate with an FBI investigation in order to stay out of prison, he's relocated by the authorities to a life of suburban anonymity as part of a witness protection program. It's not long before a couple of his new neighbours figure out his true identity and come knocking to see if he'd be up for one more hit...

Rachel is a criminology student hoping to land a position as a teacher's assistant for professor Robert Starkman. She's sure this position will pave the way to an FBI career, and she's willing to do anything to obtain it -- including killing her classmates. The school psychiatrist, Dr. Daniels, becomes aware that Rachel is insane, but ...