Jason needs to finish his latest book so he decides to go into isolation in the south of France. When he picks up a pretty hitchhiker and a recently released prisoner, it becomes the start of yet another Jason King novel.
Jason gives a lift to Lanz, a very nervous man just out of prison, who gives him a box to look after for safe keeping. Shortly after Lanz is killed. Jason opens the box and finds a bible with a coded message, which leads him to a small French village and a stone cave used as a hostel for tramps, underneath which is the object of Lanz's killers' interest.—don @ minifie-1