Gibbs and Parker go on a road trip to find one of the serial killer's victims. Also, Agent Knight goes undercover at a large manufacturing company with ties to the murders.

Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer.

Special Agent Alden Parker is still on the run with his ex-wife Vivian, so the team investigates who from his past might have a personal vendetta against him in hopes of clearing Parker's name.

The crossover continues on NCIS: Hawai'i S02E01 Prisoners' Dilemma (II).