The team conducts an unorthodox investigation when their suspects are trapped in a decompression chamber on NCIS. "Decompressed" is the 14th episode of the show's 13th season.
Ducky is attacked by somone who claims to have information about his deceased half-brother on NCIS. "Spinning Wheel" is the tenth episode of the show's 13th season.
The team investigates the death of a retired Navy Lietenant, forcing Ducky to reveal his membership in a secret society that looks into cold cases on NCIS. "16 Years" is the seventh episode of the show's 13th season.
The team must figure out if the person who murdered a petty officer is a serial killer or a copycat on NCIS. "Viral" is the sixth episode of the show's 13th season.
