An obscure Eastern cult that practices human sacrifice pursues Ringo after he unknowingly puts on a ceremonial ring (that, of course, won't come off). On top of that, a pair of mad scientists, members of Scotland Yard, and a beautiful but dead-eyed assassin all have their own plans for the Fab Four.

An American airbase in Canada provokes resentment from the nearby residents after fallout from nuclear experiments at the base are blamed for a recent spate of disappearances. A captain from the airbase is assigned to investigate, and begins to suspect that an elderly British scientist who lives near the base and conducts research in the field of mind over matter knows more than he is letting on..

The second collection of short stories written by Baroness Orczy about the gallant English hero, the Scarlet Pimpernel and his League.