When a grieving college professor confronts two hunters she catches trespassing on her property, she's drawn into an escalating battle of wills with catastrophic consequences.

The story of the doctor who faced charges of conspiracy after he assisted John Wilkes Booth by setting his broken leg after he had assassinated Abraham Lincoln.

The lust for gold and the reading of a will brings eleven visitors to a remote island retreat, but an unseen, seemingly unstoppable evil follows to stalk 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.

Grief-stricken suburban parents refuse to accept the news that their son Andy has been killed in Vietnam, but when he returns home soon after, something may be horribly wrong.

Two slave brothers, one black, one an albino, discover a treasure map which is taken from them by their foreman. They take it back but are pursued by the foreman. Originally, the foreman seeks the aid of two bounty hunters who pursue the protagonists throughout the film. At the end, both the foreman and the bounty hunters catch up with the two escaped slaves, and the foreman has a change of heart, helping to kill the bounty hunters.

Three American astronauts who land on Mars discover the body of a frozen Russian cosmonaut and a mysterious talking orb.