The novel follows 10 strangers who are tempted to come to Soldier Island for different reasons. They soon realize they were brought there under false pretenses and are trapped, and are being bumped off one by one for crimes we learn they committed but were never punished for. They begin to realize that the killer is one of the 10.
Eric Haisserer (The Thing, Final Destination 5 and A Nightmare on Elm Street) is adapting the novel to screen. I feel like it should be alarming that a writer of higher octane scary movies should be adapting a classic whodunit.