Who is the Mystery Girl? Bernard Abbey’s life was routine, stagnant, and lonely. That all changed the day she entered his life. To save him from being killed, a mysterious young woman transports Bernard to another point in time. As he comes to grips with what has happened, Bernard realizes his new friend is unable to speak. She cannot tell him who she is, where she came from, or how she can travel through time. Even worse, she’s unable to tell him what is chasing her. As the mystery girl takes Bernard across, they cross paths with strangers claiming to know her. Grappling with conflicting versions of her origin, the only thing he knows for certain is that the fate of humanity’s idyllic future is somehow connected with his new companion.

Someone is Hunting the Mystery Girl. Once a brilliant scientist, Reagan MacKay now hides from the government she once served. Having renounced her ties to the Mossback eco-terrorist group, she spends her days hiding across time, pausing only to visit Bernard Abbey, the elderly man she befriended two years ago. After finding several other former Mossbacks brutally murdered, Reagan fears she may be next. Now her only hope for survival lies in the hands of those she once betrayed. It's a race against time as Reagan rushes to earn back the trust of her ex-team members at the Department of Sciences while protecting those who matter most.