LIMINAL

Air Force Colonel Kenneth Penmark and his wife, Christine, adore their daughter Rhoda, despite her secret tendency for selfishness. Christine keeps her knowledge of her daughter's darker side to herself, but when a schoolmate of Rhoda's dies mysteriously, her self-deception unravels.

Four couples gather for dinner the night a mysterious and powerful comet passes overhead.

An alien similar to Ra appears out of the Stargate, killing five soldiers and kidnapping another, a year after the original Stargate mission. A new team is assembled, including some old members, and they go in search of the missing soldier in order to find out how Ra could still be alive. Meanwhile, the alien Goa'uld kidnap Sha're and Skaara, implanting them with symbiotes and making them Goa'uld hosts.

In a massive, mysterious chamber, fifty strangers awaken to find themselves trapped with no memory of how they got there. Organized in an inward-facing circle and unable to move, they quickly learn that every two minutes, one of them must die…executed by a strange device in the center of the room.