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

Charlie tries to bond with a bank robber. Johnny must check his feelings for a cartel leader's daughter. Briggs' life creates complications.

Briggs tries to keep control of Ari Adamian while Charlie struggles with the decision to terminate her pregnancy.

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

Briggs digs up an old connection to help Mike get information. Paige pursues a drug manufacturer.

Briggs and Charlie attempt to atone for past misdeeds. Jakes uses secrets to sell his story. Turturro examines his limits.

Johnny pitches an alternative way to traffic drugs to the head of a drug cartel in Mexico. Mike must cover up a horrific crime while undercover.

While Mike's visions and addiction to pain medications start affecting his ability to function in the field, Briggs coaxes a former FBI agent out of retirement to help take down Ari.

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

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.

Worried about Mike pushing boundaries, Briggs and Paige plan to use Briggs' cover to end Mike's operation.

The death of an agent leaves the housemates reeling; Briggs and Johnny work to rescue Lucia, who's being held by Carlito Solano; and Mike's visions lead him to a small-time crook with a dangerous secret.

The agents struggle in the aftermath of the gang war while Briggs tracks down a loose end in order to bring Ari Adamian to justice.

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.

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.

The team tries to find the bus line responsible for smuggling contraband into the country. Tuturro sells an antique gun to the son of a cartel leader.

When Mike comes face-to-face with his greatest enemy, he pledges to do whatever it takes to take the man down.

As the agents of Graceland strive to close out their ongoing cases and mend broken relationships, Briggs finds himself coerced into a high-risk undercover operation within the Armenian Mafia.

Mike develops a plan to learn about the contents of Gusti's trunk; and Briggs helps Paige go undercover with the Armenian Mafia's shipping company.

When a cartel puts a hit on Mike, he returns to Graceland, finding the place changed.

Even as the agents bait their final hooks against the Solano Cartel, it dawns that Sid may still have a few tricks of his own.

Ari rises through the ranks of the Armenian mob; Briggs dodges new suspicions from his housemates; and Charlie and Jakes are one step closer to taking down Germaine.