Halfway House  (English, Paperback, Queen Ellery)

Called to an urgent meeting at a mysterious shack in the middle of nowhere, attorney Bill Angell finds his brother-in-law, traveling salesman Joe Wilson, stabbed. With Joe's dying breath, he manages to convey that his murderer was a veiled woman. Was it the wild-eyed woman who had sped past Bill on his way up the dark road to the shack? To help him unravel the mystery, Bill calls on his old friend Ellery Queen. But first Queen will have to unravel the victim's double life - starting with the shack where he's been found dead, smack dab between two very different worlds.