When a murder investigation leads the team to Gibbs' hometown, secrets about his past are revealed.

Demons of the past come back to haunt Gibbs when he finds a cryptic message waiting for him at a crime scene.

Secrets arise when Gibbs former mother-in-law surfaces as a witness in a murder investigation.

The NCIS team uncovers a discrepancy with DNA remains when investigating the crash of a military plane that had been transporting caskets.

As the NCIS team continues its search for a missing Marine, Gibbs and Ziva travel to her last known whereabouts in Afghanistan. Meanwhile, Tony reveals his deepest fears and Gibbs is forced to relive events from his past.

During a routine stop for his morning coffee, Gibbs finds himself staring down the barrel of a gun, forcing him to question choices he has made in the past and present

Flashbacks reveal the murder case that first introduced young Gibbs to NCIS and his introduction to young, new-to-America Ducky.