Season: 2
Original Airdate: 1/9/1994
Writer(s): Jim Trombetta and Bill Dial
Director(s): David Carson
Guest Stars
James Sloyan as Dr. Mora Pol
Stardate: 47391.7
Synopsis: The scientist who found Odo finds similar DNA traces on another planet and he and Odo bring back a life form with similar shape-changing abilities. But the life form dies on the station and shortly thereafter, strange things begin to happen which indicate that an hostile alien life form is loose on DS9.