Smoked

A dead man in a chimney chute on a marine base leads the team to discover a serial killer's burial ground. They believe that the dead man was the serial killer until Abby uncovers something which proves he might actually be a victim while the whole team are in for a shock when the true killer is finally revealed. Meanwhile, Tony helps the director with a special project and makes time for his girlfriend as well while Ducky talks to Gibbs about how he felt betrayed when Gibbs left and after a heart-to-heart the two eventually repair their friendship.