The House of Strange Guests (Brady)

  • By Nicholas Brady
  • First published: UK, 1932

A blackmailer is found dead in his bathtub; first accident, then suicide, then murder are suspected.  The murderer is obvious from very early on; it is, as several readers have said, one of the clichés of the genre, and The Avengers did it in 1966, with better jokes.  The only real surprise is the secret identity of one of the suspects.