The Last of the Lost Boys — N.D. Wilson

Alex always thought his life was boring at best. But when he learns that his favorite time-traveling heroes Sam and Glory are his real parents, Alex realizes he never needed to dream of an elsewhere. Just an elsewhen.

But when Alex sets out to find Father Tiempo, he is ambushed and transformed into the powerful villain El Terremento. Now there's not a second to waste.

Unless Sam and Glory Miracle can stop the son they didn't even know they were going to have -- let alone lose -- history will be unhinged, for good.