When the prime minister and the secetary of foreign affairs ask Sherlock Holmes for help, Dr. John Watson knows this is an important case. The investigative duo must find a stolen letter that could lead to war. If Holmes solves the case by uncovering a second stain, he could save England and a marriage all at the same time. Aligned to Common Core Standards and correlated to state standards. Graphic Planet is an imprint of Magic Wagon, a division of ABDO.