Curvature (2017)

Plot

Grieving the loss of her husband, a brilliant scientist who took his own life just before perfecting a time machine, Helen struggles to find her footing. Her world is turned upside down when she receives a mysterious call from a voice that eerily sounds like her own, warning her of imminent danger. As she grapples with this unsettling revelation, questions arise about the nature of time travel and what might have compelled her to engage in such a perilous act. Helen must confront both her past and the possibilities of her future as she seeks the truth.