Mark Aiken

With Tony in custody, Jack leads his interrogation, but is shocked when a code word Tony whispers in his ear leads to old friends and a plot much deeper than anyone in the FBI anticipated.

As Dubaku applies more pressure on the President to comply with his potentially devastating demands, she considers a negotiation.

Following the President's refusal to withdraw her troops, Dubaku launches a terror attack on a high-profile American. Meanwhile, Walker is recruited by Jack and Tony.

A professional hit at a law firm leads Willows to suspect that the company has hired a team of assassins to eliminate anyone who knows of their activities.

Nadia looks to Jack to find out the truth about her mother's death. Syd suspects that Vaughn has not moved on from Lauren.

The team are forced to enlist the help of a psychotic killer who has been jailed for the abduction and murder of five women.