Sam and Ella are just an ordinary brother and sister - until they discover two amazing things . . . They can send thought messages to each other. They have incredible super powers. Suddenly they're extraordinary! And then a jewel robbery and a sinister stranger plunge them into a mystery that tests their new super powers to the limit! This is the first book in a brand-new series of thrilling crime-busting adventures aimed at younger readers of 7+. If you're a fan of Horrid Henry, then the 2-Power books are for you!