Leonard Kelly-Young

The execution of a former mafioso in the witness-protection program leads the agents to a retired mob boss, an unethical US Marshal, and a jealous widow. Elsewhere, Lisbon receives a surprise gift on her birthday.

Gibbs and Ducky suspect that an antique war stick seen on television may be a missing murder weapon linked to an unsolved case from 16 years prior.

Archer invites a group of stargazers aboard, not realising that his Suliban nemesis, Silik, is among them. The captain soon realises that Silik has a pernicious plan to change the course of history.

An old friend of Boyd's stirs up trouble when he impersonates Givens in order to rob two drug carriers. Elsewhere, Boyd is provoked into showing his aggressive side and there is a fall-out between Givens and Winona.

Ruth's estranged sister visits; house repairs put further strain on Federico and Vanessa's marriage; Nate and Brenda have news.

Andrea leads supporters on the issue of whether condoms should be distributed at school; David makes special plans with Donna.