THE HOUSE WITHOUT THE DOOR

Mrs. Gregson, acquitted of the murder of her husband (what again, hires Gamadge, graphologist, to exhume the case when she finds herself the butt of anonymous letters and attacks against her life. With inheritance money the only motive for the first death and the attempted second, suspicion falls on her two heirs -- and one is severely implicated until Gamadge loses a client to catch a killer. Tenuous.