Ten strangers arrive on an island invited by an unknown host. Each of them has a secret to hide and a crime for which they must pay. The strangers include a reckless playboys, a troubled Harley Street doctor, a formidable judge, an uncouth detective, an unscrupulous mercenary, a God-fearing spinster, two restless servants, a highly decorated general and an anxious secretary. One by one they are picked off. Who will survive? And who is the killer? Copies of an ominous nursery rhyme hang in each room, the murders mimicking the awful fates of its 'Ten Little Soldier Boys".