Courtney B. Vance Courtney B. Vance

Brenda Leigh Johnson is going to need a little help in The Closer summer finale, and Courtney B. Vance is the man for the job.

The former Law & Order: Criminal Intent and FlashForward star will guest-star in Monday's episode. He may also return later in the season, has learned.

Check out photos of the Closer cast

Vance will play Deputy Chief Tommy Delk, the head of the LAPD's counter-terrorism division. He's brought in to help with a joint investigation between the FBI and the LAPD. As Brenda (Kyra Sedgwick) fights to stay a step ahead, Delk proves that he is just as clever as she is in manipulating the system.

The 50-year-old Vance — who appeared on ER alongside wife Angela Bassett — has also appeared in such films as The Hunt for Red October, Space Cowboys and The Preacher's Wife

The Closer's finale airs Monday at 9/8c on TNT.

Check out an exclusive photo of Vance's appearance here: