When one of his patients is found murdered, psychiatrist Dr. Sam Rice is visited by the investigating officer but refuses to give up any information. He's then visited by the patient's mistress, Brooke Reynolds, whom he quickly falls for despite her being a likely murder suspect. As the police pressure on him intensifies, Rice decides to attempt solving the case on his own and soon discovers that someone is trying to kill him as well.

Corn grain contaminated with steroids produces large rats the size of small dogs who begin feeding on the residents of Toronto. Paul, a college basketball coach, teams up with Kelly, a local health inspector, to uncover the source of the mysterious rat attacks and they eventually try to prevent the opening of a new subway line as well as find the mutant rats nest quickly, or there will be a huge massacre of the entire city!

A disgruntled phone company employee develops a device whereby those answering a phone can be murdered, and it's up to Nat Bridger to stop the killer.

In 1889, seventeen men die under mysterious circumstances, and spooked by recent events, the miners who populate the town leave in droves until there's nothing left but a shell of a community.