twins. When another murder follows, the killer inside the house becomes as threatening as the mortal flames outside its walls. Faced with a complex set of alibis, motives, and evidence, Ellery Queen must rely on his powers of deduction and logic to uncover the murderer's identity - but can he solve this whodunnit before the fire devours its subjects? Featuring bizarre circumstances, eerie atmosphere, and a dazzling solution, The Siamese Twin Mystery is a fair play mystery in which the reader has all the necessary information needed to solve the puzzle. The seventh Ellery Queen novel (which can be read in any order), it finds the legendary sleuth facing one of the most memorable cases of his career.