Tripp Pickell

While investigating a serial bomber's attack on a small town, Gideon learns that the perpetrator is a protégé of his nemesis, who had murdered his previous team of profilers.

Now that Emily Prentiss has returned, the unit track down a serial killer hiding out in the woods before he can strike again.

When a dog owner is found mauled by his own animal, the NCIS team are called to ensure there was no other foul play. However, Abby believes that the dog is innocent, and is prepared to risk her job to prove it. Meanwhile, Gibbs learns about Jenny's secret.

As the imminent threat of catastrophe crystallises, President Taylor tasks Jack with a crucial mission. Adviser Ethan Kanin also makes a return.

Magnum goes to extreme lengths to uncover the truth about a crime that may have involved his dear deceased friend.

The CSI team investigates when a body is dug up in the luau pit of a Hawaiian-themed hotel. Internal Affairs begins to question Grissom and Sara's return to the crime lab.