After a night out of partying and left behind by her friends, Ava wakes up and sneaks back home only to find that she's already safe in bed. But that's not Ava - it's someone who looks just like her. A time-traveling fugitive has stolen Ava's body, her identity, and her life. What's more -- she's not alone. There are others, hiding in the past, secretly living among us, plottin...