Rememory

Gordon Dunn, a famed scientific pioneer, is mysteriously found dead just after the unveiling of his newest work, a groundbreaking device able to extract, record and play a person's unfiltered memories. After his death, Gordon's reclusive wife, Carolyn, delves deeper into her own private world when a mysterious man shows up claiming to be from Gordon's past. With questionable motives he takes the machine and uses it to try and solve the mystery, beginning an investigation of memories that lead him down a path of guilt, grief, and betrayal to an unexpected answer. - IMDb