Peter Lerangis, the New York Times bestselling author whose more than one hundred and sixty books have sold over five and a half million copies, returns with Throwback, the first book in an electrifying action-adventure trilogy about a boy who discovers that he alone may be able to alter the course of history. When Corey gets trapped in 1917 New York City, he must find his way back to the present without destroying the future.

Think of me. And time will fly.

Those are the words that thirteen-year-old Corey Fletcher’s beloved grandfather, his Papou, left on his bedside before he disappeared a year ago.

Corey misses him desperately and refuses to give up hope that he’ll see his grandfather again. But as time passes, it seems less and less likely, until the day Corey happens upon a vintage picture from 1862 of the very block where he lives. Suddenly Corey finds himself transported back to that time—the very place in time where Papou had been trapped. Without meaning to, Corey saves a life, changing the past in a way no time traveler ever has been able to before. When they return to the present, Papou explains that Corey may be the first known “throwback.” Plenty of people can time travel, but until now, no one had ever been able to alter the past. Suddenly, everyone is looking for Corey—to kidnap him, to use his powers for their gain, even to kill him. Papou warns Corey that, tempting as it may seem, using his powers is incredibly dangerous. But to Corey, the chance to right certain wrongs is too tempting, and so he goes back to the day his grandmother died, determined to save her. But when things go awry, Corey winds up all the way back in New York City in 1917. Lost and alone, Corey has to use his wits to find a way to make it back to the present alive without changing the past and, perhaps, forever altering his future.

New York Times bestselling author Peter Lerangis is back with a new heartfelt protagonist, a new set of magical rules, and a new world to dive right into with Throwback.