A deadly secret from the past returns to haunt a young woman and her loved ones in Secret of the Blue Room. Irene von Helldorf's twenty-first birthday celebration is eclipsed when her father shares the dark details of his estate's guest room: twenty years earlier, three people were killed there and their murders remain unsolved. Hoping to prove their own bravery and win Irene's love, each of her three suitors agrees to spend a night in the room and a new string of deadly mysteries is set into motion.