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Trapped in a violent relationship with a wealthy and brilliant scientist, Cecilia Kass escapes in the dead of night and disappears into hiding, aided by her sister, their childhood friend and his teenage daughter. But when Cecilia’s abusive ex commits suicide and leaves her a generous portion of his vast fortune, Cecilia suspects his death was a hoax. As a series of eerie coincidences turns lethal, Cecilia desperately tries to prove that she is being hunted by someone nobody can see.