An undercover FBI agent learns his job requires more than criminal investigations.

Briggs and Mike tilt rival gangs against each other. Mike learns that undercover life has moral complications.

Briggs helps Lauren with her case against the Russian Mafia. Charlie's C.I. proves unreliable during a drug deal.

Mike is recruited by a Nigerian drug lord to teach gang members how to shoot. Paige gets Jakes and Tuturro to go undercover with a marijuana farmer.

Mike gets deeper into Bello's organization. Briggs and Charlie resume former identities.

Mike convinces Bello to steal from a drug cartel. Briggs helps Charlie cover up bad decisions.

Charlie decides to tell the house about her bust. Briggs must come clean. Mike believes his investigation is ending.

The Briggs-Bello alliance is tested due to an ultimatum. Mike must push his limits for the good of the case.

Bello's last strike initiates a war that Graceland must stop. Charlie meets an unusual ally. Briggs faces the past.

Charlie learns a secret about Briggs and works with a Federale. Mike finds out that Juan is missing.

Briggs and Mike search for the truth about Juan's disappearance. Briggs makes a decision about his future.