While traveling in a runabout, Dr. Bashir and Major Kira respond to a distress call from a disabled Kobliad ship. When they beam over, Bashir is attacked by an injured passenger — a murderer named Rao Vantika, who suddenly dies. Back aboard Deep Space Nine, the Kobliad security officer Ty Kajada insists on an autopsy to prove Vantika, who has a history of faking his own demise, is truly dead. Meanwhile, the crew determines that Vantika was probably coming to the station to hi-jack a freighter carrying deuridium, a rare substance that prolongs Kobliad life. When Odo tries to implement a security plan to protect the shipment, he discovers that the station computer's memory has been purged. The crew is now convinced that Vantika may be hiding in someone else's brain — and so the hunt for the passenger begins.

Caitlin Brown (Ty Kajada)
James Lashly (Lt. George Primmin)
Christoper Collins (Durg)
James Harper (Rao Vantika)