Doppelganger

<p>Lydia Evergreen doesn't believe in coincidence-only cause and effect. So when half the university's population vanishes without a trace she refuses to believe it's an accident. The anomaly defies logic but one thing is clear: it's connected to her work. And Ray her closest colleague is among the missing.</p><p>With time running out before the unstable rift seals itself forever Lydia crosses into the unknown a world that mirrors her own in eerie and impossible ways. There she comes face to face with unsettling versions of the people she thought she knew-including a dangerous figure from a world where knowledge is ignored and those who seek it are seen as a threat.</p><p>Can Lydia prevent him from breaking into her world? Or will stopping him require the ultimate sacrifice?</p>