On his birthday, Walter Sparrow, an amiable dog-catcher, takes a call that leaves him dog bit and late to pick up his wife. She's browsed in a bookstore, finding a blood-red-covered novel, a murder mystery with numerology that loops constantly around the number 23. The story captivates Walter: he dreams it, he notices aspects of his life that can be rendered by "23," he searches for the author, he stays in the hotel (in room 23) where events in the novel took place, and he begins to believe it was no novel. His wife and son try to help him, sometimes in sympathy, sometimes to protect him. Slowly, with danger to himself and to his family, he closes in on the truth.

The small town of Tarker's Mills was a place that was very peaceful, where nothing extraordinary ever happened until one night when murders began. The townspeople believe it's some maniacal killer on the loose whom they intend to hunt down. Marty, a young handicapped boy, believes the killer is no man at all, but a werewolf. After a run-in with the werewolf, Marty and his sister Jane hunt all over town for the man who is the werewolf.

This movie is about Sarah as she and her dad go to their lakeside retreat to pack things up inside because it is being sold. While there, her uncle also helps get the place up to scratch so they can sell it. The uncle has to leave to get an electrician to check the wiring, but after he goes she starts hearing noises and seeing what she thinks are people inside the house. Soon she and her dad are attacked by someone or something and they end up in a fight for their lives. But there's something more going on here than she thinks.

A family looking to start a charter-boat business buys a ship that holds terrifying secrets once out on isolated waters.