Kyle MacLachlan plays Lloyd Gallagher, an FBI agent who teams up with a detective to track down an alien criminal hiding in human bodies.
Michael Nouri portrays Tom Beck, a detective investigating a series of bizarre crimes linked to an alien entity wreaking havoc in Los Angeles.
Claudia Christian takes on the role of Brenda Lee Van Buren, a stripper who gets involved in the alien's deadly game of violence and possession.
Clarence Felder is seen as Lt. John Masterson, a police officer who joins forces with the FBI to stop the extraterrestrial threat terrorizing the city.
Clu Gulager plays Lt. Ed Flynn, a seasoned cop involved in the intense manhunt for the alien perpetrator causing chaos in the city.
Ed O'Ross portrays Cliff Willis, a criminal who becomes a host for the alien creature and embarks on a violent spree of crime and destruction.
William Boyett is Jonathan Miller, a businessman possessed by the alien entity that drives him to commit brutal and ruthless acts in its quest for survival.
Richard Brooks appears as Sanchez, a police officer caught up in the dangerous pursuit of the alien criminal wreaking havoc in the city.
Larry Cedar takes on the role of Brem, a criminal targeted by the alien parasite for its ability to perpetrate violent crimes and stay hidden.
Katherine Cannon is Barbara Beck, the wife of Detective Tom Beck who becomes entangled in the deadly conflict with the alien presence threatening their lives.
John McCann portrays Senator Holt, a government official involved in the investigation of the alien threat and its potential impact on national security.
Chris Mulkey plays Jack DeVries, a criminal who becomes possessed by the alien force and goes on a violent rampage, causing chaos and destruction in his wake.
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