While on vacation, Ed Lucas presents his wife Kate with a souvenir of "The Concrete Captain," a small chunk of concrete with a miniature harpoon sticking out of it. Kate seems to be drawn to the item, continually picking it up and looking at it. Later, she is also drawn to a seaside inn where she and her husband hear the tale of the Concrete Captain and his wife, Katherine. But when Kate becomes ill and starts acting strangely, Ed wonders if the Concrete Captain hasn't returned to try to claim Kate as his own.

Bobby is a very bright but very sickly boy with a particular fondness for chess. As he starts fifth grade he is delighted to find that his teacher is the very popular Miss Gilden, with whom he forms a close friendship. Unfortunately, early in the school year, Bobby becomes too sick to go to school. After a short period of time, an alter-ego who looks exactly like Bobby appears and tells him not to worry, he will go to school for Bobby and come home and tell him what he has learned. Unfortunately, the alter ego terrorizes Miss Gilden, ultimately disgracing her and causing her death. As the alter-ego becomes stronger, Bobby becomes weaker until the alter-ego suggests that they play a game of chess to decide who should live as Bobby. With his life as the stakes, Bobby needs to best this evil version of himself. Assistance comes from an unexpected source.

Christina is a young woman with a twin sister, Lisa, whom she has never met. She hopes to meet Lisa on a visit home but is distressed to find out that Lisa has recently died. Christina begins to hear Lisa calling her at night and then starts to have visions of Lisa in an open grave. She tells her mother about this and discovers some unpleasant family secrets about Lisa. Does Lisa want revenge...or does she simply miss the sister she never had?

A widow is stalked by a vicious dog that once belonged to her late husband, but which now lives with a sinister neighbor. Even after the dog turns up poisoned, she believes it is still stalking her.

Terror ensues when Ellen Alexander wakes up alone in a hotel room, with no sign of her husband, Harry. Inquiries at the front desk yield the answer that he has checked out without her, and eventually lead her to Brett, who helps her find the answers she is seeking.

Fred Colby is a former actor, who now works as a security guard at the studio where he used to film movies. He and his wife, Linda, are expecting their first child together. The studio is closing in a few weeks, and is plagued by a neighborhood gang, who sneak in after hours. While chasing the gang, Fred discovers that something else is roaming the deserted studio, something that threatens not only him, but his wife, and his unborn child, and he must find a way to prevent harm from coming to all of them.

Art student Holly Brown is sketching in Central Park one day when James Barlow introduces himself to her. He offers to take her to lunch and, intrigued, she accepts. Holly is charmed by James and begins seeing him, but as soon as she does, she finds herself terrorized by an old man. As her relationship with James grows, she is surprised to discover the connection between James and the old man. But even bigger surprises are awaiting her when she discovers the truth about James.