Stardate not given: A Trill candidate for joining with a symbiont arrives on DS9 for observation by Dax, who will report his psychological fitness to the Symbiosis Commission on the Trill homeworld. In the course of their bumpy relationship – based on the fact that the candidate prepared himself to be in the company of Curzon Dax and not Jadzia – they pick up something unusual from the wormhole and bring it back to the station for study, not realizing that it will begin expanding rapidly until it threatens to consume the station…and the space beyond.
teleplay by Jim Trombetta and Michael Piller
story by Jim Trombetta
directed by David Livingston
music by Dennis McCarthy
Guest Cast: Geoffrey Blake (Arjin), Ron Taylor (Klingon Chef), Richard Poe (Gul Evek), Chris Nelson Morris (Alien Man), Majel Barrett (Computer Voice)
LogBook entry by Earl Green