John Rother sets off from Chalklands Farm for a holiday, but later his car is discovered not far from home. There is evidence of a struggle, and his bloody cap is found next to the car. But has John been kidnapped, attacked? There is no way to know.
Superintendent Meredith can’t help suspecting that John’s brother, William, had something to do with John’s disappearance. The two brothers co-own the farm and a lime-burning concern on the property, and rumor has it that John was flirting with William’s wife, Janet. But Meredith can’t prove John has been harmed.
Then one of the Rothers’ lime customers reports finding a bone in the lime. The bone is found to be a human tibia. When Meredith’s men go through the lime shipped since the murder, they find more bones. Moreover, Janet was spotted taking a package out to the lime kilns.
From the minimal information they start with, the police begin to collect more, but it doesn’t make sense. A strange man is seen fleeing the area where John’s car was found. Was he an accomplice? A bogus message lured William out on the night of his disappearance. Still, it looks like William murdered his brother, and Meredith is about to arrest him when he is found dead, an apparent suicide.
This mystery is fairly complicated, but I had an inkling of what was going on almost from the beginning and never changed my mind. I turned out to be right. As with the other Bude mysteries, the emphasis is on the puzzle. The characters, except for Meredith, are cyphers.