When a decaying Russian satellite crashes on the island, the Professor uses a key component for a barometer. With that device, he learns that a massive wave is going to swamp the island. In desperation, the castaways lash their huts together into one structure in order to have any chance to ride the disaster out.

College student Regina comes back to her room from class one day to discover she's won a getaway vacation at the quiet Red Wolf Inn. Before she can even call her parents to let them know where she'll be, the lodge owners arrange her transport and she soon finds herself with two other young women as guests of a kindly old couple. The place is beautiful and the food is fantastic, but something just doesn't seem right. One of the guests has suddenly vanished, and the hosts are certainly reluctant to have anyone poking around the meat locker. Still, the barbecued ribs are delicious, so what's there to complain about?

A young couple moves into a farmhouse in rural Pennsylvania. What they don't know is that there is an unseen presence in the house, and that it wants to take possession of the wife.

Sixties couples Michael and Donna and Paul and Erica become involved with the intense Count Yorga at a Los Angeles séance, the Count having latterly been involved with Erica's just-dead mother. After taking the Count home, Paul and Erica are waylayed, and next day a listless Erica is diagnosed by their doctor as having lost a lot of blood. When she is later found feasting on the family cat the doctor becomes convinced vampirism is at work, and that its focus is Count Yorga and his large isolated house.

A continuation of the anthology series “Alfred Hitchcock Presents”, hosted by the master of suspense and featuring thrillers and mysteries.