Ellery Queen, the gentleman detective, is a handsome Harvard grad who works as a private eye alongside his father, Inspector Richard Queen of the NYPD. In The Door Between they face one of their most daunting cases. Karen Leith is dead. An acclaimed novelist turned recluse, she died alone, in a small secluded room of her odd Greenwich Village house. Reportedly tormented by a scandal from decades past, she killed herself. Or did she? The deeper Ellery Queen delves into her past, the more certain he becomes that she was murdered - in as clever and horrifying a manner as he has ever encountered. Queen's superb powers of deduction are put to the ultimate test in this intricate whodunit.