Russian and British submarines with nuclear missiles on board both vanish from sight without a trace. England and Russia both blame each other as James Bond tries to solve the riddle of the disappearing ships. But the KGB also has an agent on the case.
Freelance reporter Jennifer and her two friends, Karen and Vicki, accept an invitation for cheap room and board in a large farmhouse offered by a friendly, but shady, museum owner named Ernest Keller since all the motels in and around town are booked for a holiday parade fair Jennifer is covering. But unknown to the women, some unseen “thing” has been living in the basement of the house for over 20 years and is looked after by Keller and his shy sister Virginia, in which the “thing” soon gets out and begins harassing and killing the women one by one in various violent, but seemingly accidental, means.
Mallory and Miller are back. The survivors of Navarone are sent on a mission along with a unit called Force 10, which is led by Colonel Barnsby. But Force 10 has a mission of their own which the boys know nothing about.
A tourist resort in Africa finds itself at the mercy of a huge man-eating crocodile from a local native legend which the croc is the incarnation of a native god angered by the intrusion of the tourists on its nesting ground. After a new natives are killed and eaten, they naturally blame the tourists and set out to kill them while the survivors try to rally on a boat with the hungry crocodile in the water, and the blood-thirsty natives on land waiting for them.