An FBI agent works with a refugee scientist and the Coast Guard to crack a Soviet spy ring in Boston.

A writer, looking for some peace and quiet in order to finish a novel, takes a room at the Baldpate Inn. However, peace and quiet are the last things he gets, as there are some very strange goings-on at the establishment.

An ex-con trying to go straight must face a crazed criminal out for revenge.

An anxious old man who is searching for a rare edition of the Talmud finally tracks the tome down at a research library in Boston. But before he can get his hands on it, a hideous apparition intervenes.