Dva námořníci najdou na námořní základně v Norfolku tělo mrtvé a znásilněné dívky. Gibbs spolu s ostatními vyšetřovateli jsou překvapeni informací lékaře Mallarda, který jim sdělí, že zavražděná byla zabita stejným způsobem jako jedna žena před deseti lety. Další zkoumání potvrdí, že sperma nalezené u oběti se také shoduje. Mallard, který u sebe stále nosí urnu první mrtvé, celou záležitost velmi těžce prožívá. Agentům se naštěstí podaří zjistit totožnost druhé mrtvé a i Abby v laboratoři odvede dobrou práci, podaří se jí dokázat, že DNA ze spermatu se shoduje s DNA vlasů možného podezřelého. Jenže ten je už několik měsíců mrtev. Sperma mohl podstrčit pouze ten, kdo měl přístup do laboratoře.

In the squad room Kate chastises Tony for not returning the extra $1.85 when he got his change back at a drive-thru. NCIS is called in to investigate the body of a Lt. Two seaman off the George Washington discovered the body of the woman. The two seaman flag down Petty Officer Cluxton. McGee and Cluxton worked together at Norfolk.

Ducky is called to the crime scene to look at the body. He is supposed to be going to London for The Society of Medical Examiner's conference. After seeing the body Ducky is shaken. Ducky orders Abby to run the finger prints and semen samples ASAP.

Ducky goes to Norfolk to pick up sperm samples from an old case. He brings back the sample to compare to the sample found inside Jane Doe (Ducky tells the team that she is not really a Navy Lt.) Ducky had a case ten years previous with another women killed who had been dressed up to look like a Navy Lt with a trident carved in her neck. Ducky has been carrying the ashes of the dead Jane Doe for ten years. She is the only Jane Doe he never identified.

Abby matches the two semen samples to one person. Tony experiences bad luck after not returning the money and Cluxton finds a note from the killer left at the crime scene that says I'm back (This note is similar to the one found by the first victim ten years prior).

Gibbs interrogates Chief P.O. Ian Goetz who found the first victim but he has an alibi named William McDougal. Meanwhile McGee uncovers a suspect: Harlon Wilson. Tony and McGee investigate and discover that Harlon is dead. McGee still hangs on to the idea that he committed the crime and takes Harlon's brush to Abby.

Tony and Kate identify the second victim as Mariela Santos at a local gay bar.

In the lab Abby analyzes the note that Cluxton brought, and questions McGee about their relationship at Norfolk.

Tony and Kate search Santos' apartment. They find that it has been cleaned.

Abby matches Wilson's sperm to both victims. The only problem is Wilson was dead before the second victim was killed. Harlon's sperm was inserted in the second victim by Cluxton. The second victim was her lover, and she had access to the evidence locker. She knew about the case because her father had investigated it ten years ago.

Ducky gives his Jane Doe a final resting place in a cemetery