Intruder, The (1975)

The lust for gold and the reading of a will brings eleven visitors to a remote island retreat, but an unseen, seemingly unstoppable evil stalks them one by one. The bodies don't stop dropping until the final shattering conclusion. Who – or what – is the intruder? One thing is for certain: it will not stop until it kills them all. Stars Chris Robinson, Mickey Rooney and Yvonne De Carlo (aka: Lily in The Munsters). Also with Ted Cassidy (aka's: Lurch in The Adams Family and Ruk in the Star Trek episode “What Are Little Girls Made Of?”).