The sphere of suspense for the story of a strange, parasitic attachment and the unbelievable events which follow. Guy Haines, on the way to Texas to divorce his wife Miriam so that he can marry Anne, is picked up by Charles Bruno, an alcoholic and a maniac, who suggests to him that he murder Miriam- in exchange for Guy's murder of the father he hates. Dismissing this at the time, Guy later finds that Miriam has been murdered, and he is haunted by the reappearance of Bruno, threats, letters. Guy, composed and reputable at the time, is finally worn down by guilt, fear, sleeplessness, and he commits the murder that Bruno lays out for him. Never free of his conscience- or of Bruno-Bruno's accidental death is the impetus for Guy's eventual confession.... All of this seems quite unreasonable.