Arthur Brownjohn has never quite got anything right. Whatever he does, it always seems to go more than a little awry. The same could be said for the murder of his wife - a bungled, inferior affair despite his having consulting all the experts in the field of killings, executions and dastardly deeds. Resolving never to repeat the same mistakes, he enlists the help of Major Easonby Mellon - a man who really knows what he's doing...