The Siamese Twin Mystery

When Ellery Queen and his father encounter a raging forest fire during a mountain drive, the only direction to go is up - up a winding dirt road that leads to an isolated hillside manor, inhabited by a secretive surgeon and his diverse cast of guests. Trapped by the fire, the Queens settle into the uneasy atmosphere of their surroundings. Things become even more tense the following morning when the doctor is discovered dead, apparently shot down while playing solitaire the night before.