Sonny Mario Ayon

After an incident involving Wallowski, the Lightman Group is called upon to examine police profiling techniques; Internal Affairs make their presence known too.

Paranoia sweeps through the team when Granger is poisoned by the mole, prompting Hetty to order a lockdown while everyone is investigated.

When the same kind of chewing gum is found at two different crime scenes across the city, Jo believes the cases may be connected.

Officers find a dead gang member in the trunk of a car; Detective Bryant asks Lydia to take Janilla in; the rift between Detective Salinger and his daughter grows.

While representing an artist who’s been arrested for murdering her husband, Keegan (Greg Kinnear) must defend his own reputation when the police and the public suspect him in the death of Mayor Barzmann.