Multiverse (2021)

Colleagues Loretta, Danny, Amy and Gerry are on the verge of an amazing breakthrough in quantum physics when tragedy strikes. Racing to complete the experiment, Loretta dies in a fiery car accident. Five months later, as the trio struggle to move on with their lives and the work they'd started, Loretta returns. She's full of energy, enthusiasm, seemingly unaware she's been gone for months. Are the friends losing their collective minds or has something remarkable happened? Soon, each of them comes face to face with their dead ringer. Professional rivalries and personal relationships surface and the friends realize only one version of them can exist in our reality. A violent correction is necessary to maintain order.