The latest in the series featuring Liam O'Connor, Maddy Carter and Sal Vikram, time-travelling teens who work for a secret government agency. A time wave has struck that alters the entire history of the American Civil War; now Abraham Lincoln is stuck in the present. Can they return him to the past, and persuade the two colonies to cease fire long enough to save history? Ages: 11+. 'Insanely exciting, nail-biting stuff' }Independent On Sunday{