Turn

His friends are captured, and the President demands an audience...

Mark Carpen has a shifter, a special watch that allows him to travel through time. He uses it to intervene in the past, rescuing the innocent from unforeseen violence and stopping tragic accidents before they can happen - though at times a mysterious force inexplicably blocks him, especially when he's trying to save someone he loves.

Alexander Rialto is the leader of Dark Shift, a cabal of time-traveling assassins. Mark's mort...