Tempest - Julie Cross

Jackson Meyer is hiding a secret. He can time-travel. But he doesn't know how he does it, how to control it or what it means. When Jackson, and his girlfriend Holly, find themselves in fatal danger, Jackson panics and catapaults himself two years into his past, further than he's ever managed before, and this time he can't find a way back to the future. All the rules of time-travel he's experienced so far have been broken and Jackson has no choice but to pretend to be his younger self whilst he figures out a solution. Jackson is tearing himself apart with guilt and frustration, wondering if Holly survived. He's also become the target of an unknown enemy force and it seems even his dad is lying to him. Jackson is racing against time to save the girl he loves, but to do that he must first discover the truth about his family and himself.