A seasoned cop (Nouri) and a benign alien posing as an FBI agent (MacLachlan) team up to track down and destroy a hyper-violent alien who survives by invading the bodies of humans, causing them to go on murderous rampages. Much acclaimed, high velocity action film with state-of-the-art special effects (at least for the time). Followed by a minor 1994 sequel with a different cast.