Otto and Leni have escaped to England from Nazi Germany. They thought they were safe, but now the British want them to go back. Dropped behind enemy lines, they embark on a secret operation codenamed Wolfsangel. Their mission is to find and kidnap a girl who could bring down Hitler And so begins their bravest journey yet.

How long did it take to build the Titanic? Why did it sink? What was it like to be a passenger? What happened to the people who survived? Find out the answers to these questions and more in Magic Tree House Research Guide: Titanic, Jack and Annie's very own guide to the ship and its story. Includes information on the people who sailed on the Titanic, life on board the ship, the search for the sunken remains, Titanic artifacts today, and much more.