Under the watchful eye of Superintendent Bone, Inspector Dewar has his work cut out when he is called to investigate a mysterious spate of killings - each victim is apparently unconnected, the murders linked only by the macabre addition of a numbered badge to the victim’s corpse. As the death toll mounts, Dewar and Bone face a race against time to catch the killer. But who could be behind these terrible crimes? And what could possibly be the motivation for such apparently random acts of cruelty…?

Originally published in 1929 this is a classic British mystery from the ‘golden age’ of crime fiction.