Twenty-five years ago, Lauren Phelps and her sister Patty were kidnapped from their backyard on Long Island. Lauren escaped her captor, but Patty was killed.<br /><br />Ever since, Lauren has suffered from nightmares of the &ldquo;Shadow Man.&rdquo; Trying to recall his face and avenge her sister&rsquo;s murder, Lauren, now a kidnapping investigator, enrolls in a clinical trial for a new memory drug.<br /><br />At the offices of Memory Makers in California, she receives the injections of the Memory Makers&#39; serum, and begins to experience flashbacks of repressed memories. Along with the flashbacks, she receives threats from an anonymous source that point back to her childhood trauma.<br /><br />Soon, Lauren becomes involved with a fellow trial participant who seeks to recall his own traumatic past. But can Lauren discover the identity of the &ldquo;Shadow Man&rdquo; before history repeats itself?