Whitney Cameronn (Cotten), a man with a strong affection for his sister-in-law (Peters). When one of her stepchildren dies, it's revealed that the child was poisoned to death. Whitney suspects his sister-in-law committed the murder and is afraid that her other son may be in danger. The film climaxes during an ocean voyage aboard a cruise ship.
In the backwoods of Ontario lies a town called Kinmount. This little hamlet of only a few hundred residents no longer has a gas station or a school; however, thanks to the singular vision of local septuagenarian Keith Stata, what it does boast is a five-screen cinema palace and memorabilia museum—one that welcomes upwards of 50,000 visitors every summer.