Disturbed by Joshua's unusual behavior, as well as Alec's new job working at Jam Pony, Max's concern for Joshua is heightened when sector police killings are attributed to a ""beast-like"" creature. As Max races to try to figure out the mystery of the killings before more are committed, she makes a surprising discovery about who the culprit actually is.

Max's life is placed in more danger than ever before when she is hunted by the one person who knows her better than anyone -- her clone. Though even the existence of this exact replica is news to Max, she quickly realizes the imminent danger from an individual who can get inside her head and infiltrate her life like no one else. Dealing not only with this new threat but also the disintegration of her relationship with Logan and Joshua's disillusionment over not being able to go out in public, Max must race against time to figure out how to stop this deadly enemy before it's too late.