Impulse

Claire Dennison (Willa Ford), desirous of testing her husband Jonathan's curiosity, assumes a fake identity to tantalize him, but discovers she's actually pursued by a perfect doppelganger named Simon (Angus Macfadyen). This identical twin manipulates Claire into believing he is the true husband while Jonathan is being held in a mental institution. After becoming entangled with both men, Claire must confront which one is her actual spouse and ultimately pays a deadly price for her deception.