A man of devilish charm and enterprising spirit, Dougal Douglas is employed to revitalize the ailing firm of Meadows, Meade & Grindley. He succeeds, but not quite in the way his employer intended. Strange things begin to happen as Dougal exerts an uncanny influence on the inhabitants of Peckham Rye and brings lies, tears, blackmail and even murder into the lives of all he meets, from Miss Merle Coverdale, head of the typing pool, to Beauty, the resident femme fatale, and even Mr Druce, the unsuspecting Managing Director himself.