Chief O'Brien befriends a mysterious alien who comes through the Wormhole in a badly damaged ship. The first of his species to come to Deep Space Nine, Tosk is a unique reptilian-like creature whose behavior patterns are so different from humans that he arouses the suspicions of the crew. When he is caught altering a security grid near the weapons locker he refuses to answer any questions, but his silence is explained when an alien hunter arrives and reveals that Tosk is the prey in a deadly game of pursuit. Commander Sisko is faced with a dilemma — he cannot save their new friend from a life of captivity without flagrantly violating Starfleet's Prime Directive.

Scott MacDonald (Tosk)
Gerrit Graham (The Hunter)
Kelly Curtis (Miss Sardah)