Innkeeper Mrs. Warren is suspicious of her new guest. He never leaves the room and hasn't been seen in days. She has asked Sherlock Holmes and his partner Dr. John Watson to investigate the strange man. What Holmes uncovers is much more interesting than a reserved guest. Follow along as Holmes uncovers a mystery and murder in one investigation. Aligned to Common Core Standards and correlated to state standards. Graphic Planet is an imprint of Magic Wagon, a division of ABDO.