Charles K. Williams was an American author of crime fiction. He is regarded by some critics as one of the finest suspense novelists of the 1950s and 1960s. His 1951 debut, the paperback novel Hill Girl, sold more than a million copies. A dozen of his books have been adapted for movies, most popularly Dead Calm and The Hot Spot.

Dead Calm is a 1989 Australian psychological thriller film directed by Phillip Noyce and starring Sam Neill, Nicole Kidman and Billy Zane. The screenplay by Terry Hayes was based on the 1963 novel of the same name by Charles Williams. Filmed around the Great Barrier Reef, the plot focuses on a married couple, who, after tragically losing their son, are spending some time isolated at sea, when they come across a stranger who has abandoned a sinking ship.