In the vicinity of the Chelsford family castle, a black abbot appears, killed by Lord Chelsford about eight centuries ago, who is he? Ghost or living creature? Residents are gripped by fear, and mysterious events begin to occur in the castle itself..... hatches with slamming lids, accomplices, disguises, unexpectedly appearing doubles, hiding places in desks, exotic dens, hidden tunnels and underground passages, a network woven by the experienced hands of the criminal world, covering even aristocratic salons - all this attracts and fascinates the reader in the famous crime novels of the Englishman Edgar Wallace (1875–1932).