Here are the details you need to know: WHO: The new recruits?Luke, Julia, David, and Isabel WHAT: Miss Z, a mysterious billionaire and a collector of rare photographs, is sending her four recruits back in time on a mission to capture?for the first time?one of the most important moments in American history: Abraham Lincoln giving his famous Gettysburg Address. WHERE: Gettysburg, Pennsylvania WHEN: November 19, 1863 WHY: That's for Miss Z to know and the Flashback Four to find out. In bestselling author Dan Gutman's all-new series, which blends fascinating real history with an action-packed and hilarious adventure, four very different kids must work together to ask the right questions, meet the right people, and capture the right moment. And most important?not get caught!