A detective on trail of a suspected child killer, was arrested for the crime, but was allowed to walk free after a clerical error. The detective enlists the mother of the murdered child to exact a justice the legal system can't provide.
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.
On his way to work, a bank manager receives an anonymous call claiming there's a bomb under his car seat, and if anyone exits the car, it will explode unless he can pay a ransom.