Richard Chevolleau

A bomb goes off in the station's evidence room, with Andy inside.

A community-outreach baseball game is disrupted by a drive-by shooting, and the investigation puts Gail's relationship with her brother to the test.

Andy and Sam are shocked to learn Oliver is the prime suspect in IA's corruption investigation into 15 Division. They have one day to clear his name.

A billionaire computer tycoon is shot and killed while trying to mug a couple outside a movie theatre.

With Oliver still under suspicion, Andy, Dov, Gail and Nick undertake a risky plan to prove that Commissioner Alonso Santana is corrupt.

When Nick's estranged older brother emerges with new information on someone from their tragic past, Nick goes off the grid to track the man down.