It's been a year since Justine Cook defeated an immortal enemy that hunted her family for generations. Settling into a peaceful life with her boyfriend in the small town of Lantern Creek, Michigan, she hopes to escape the events of the summer before. But the past won't let go so easily.

When a woman named Amanda Bennett survives a fall from a cliff on Mackinac Island, it triggers a series of events that reawakens the past. Soon Justine and her brother are pulled into a mystery that threatens to destroy the life they have worked so hard to create.

As people begin to die, people only Amanda Bennett can see, Justine must race against time to destroy a dark power she thought she had buried the summer before.