A covert identity created for one of Gibbs' undercover cases 20 years ago resurfaces, when a murder victim is found living under the alias.
The president and his staff contend with a controversial sex education study at the same time a new hate crimes bill is to be signed, and Josh and Sam face a subcommittee.
Detectives Goren and Eames face a group of suspicious characters as they investigate the deaths of two high-class art experts, one who was a museum curator and the other an art authenticator.
Frasier resorts to crime to spice up his life, but soon feels guilty. His and Niles' attempts to put things straight have embarrassing consequences.
Givens's estranged father crashes back into his life after getting in trouble with the law again. Elsewhere, the US marshal attempts to capture a fugitive hiding out in Harlan County.