Mark Bodin

A group of friends and a hitchhiker become stranded on a tourist island where they are stalked by a disfigured cannibalistic killer who is prowling the island after killing its residents.

The titular gay couple become involved with local cops and foreign spies when one of them unwittingly obtains a roll of stolen microfilm.

Astronauts become monstrous host-inhabiting creatures after space mission. Cave explorers encounter these beings underground. Survivors try escaping and fighting the threat.