Mysterious corridors in space lead to the discovery of an ancient civilization.
A little girl's imaginary friend becomes a frightening reality for the crew when she threatens to destroy the Enterprise.
Sipowicz and Simone are called to the scene of a murder where a female victim was stabbed fifty-five times. Meanwhile Lesniak and Medavoy help a group of single and lonely females being targeted by a slick con artist.
A man loses his penis. Fancy makes Captain and the incoming Lieutenant is a ball-breaker. Andy is having second thoughts about Cynthia. A mob hitman sings like a canary and implicates a celebrated Customs officer.
A death and new evidence hamper Ben's efforts to clear the name of a wrongfully imprisoned former client.