Callahan's Secret in is the third book in the Callahan's series. It takes place at Callahan's Place.
The story of the Staircase and introduction of Mary Callahan.
The death (and resurrection) of Jake's guitar Lady Macbeth and the revelation of Pyotr's true nature.
A story about the Cheerful Charlies attempt to help Billy Walker.
Mickey Finn's former master, The Beast, comes to Earth. The destruction of Callahan's Place and the revelation of the true nature and name of Mike Callahan.