Star Trek: Deep Space Nine, Series 7, Episode 13.
First broadcast on Wednesday 10 February 1999. Stardate: Unknown (2375).

It’s the 1990s — the era of the Consulting Psychopath — and so when a pretty young lieutenant is shot dead in his locked quarters, perky newcomer Ezri Dax decides to investigate — with the help of her crap-haired and murderous previous host Joran. It’s all very light and implausible, but we get a few laughs, Ezri gets a big gun, and the regular cast (except Cirroc) get their usual DS9-style character beats.