Castle of Evil plot
"So terrifying!... We have reserved your coffin!... If you D.D. (drop dead) while watching: Castle of Evil"
Six people receive an invitation to attend the reading of a will on a deserted Caribbean island. They are amazed that they were mentioned at all and will inherit money, because all hated the deceased wholeheartedly. Unsuspecting, they arrive at the ceremony during which the deceased's electronic robot, who was a chemist, becomes deprogrammed and a ghost appears and accuses one of them of murder. In the dead of night an attempt is made to kill the visitors one by one.