In the course of her work, scientist Jeannie Ferrami stumbles across a baffling mystery: Steve and Dan appear to be identical twins, but were born on different days, to different mothers. A law student and a convicted murderer, they seem a world apart, but as Jeannie begins to fall in love with Steve, she finds her professional - and personal - future threatened. Steve is accused of a terrible crime, and Jeannie is forced to question just how different the two men really are. Together, she and Steve investigate the mystery and uncover all the secrets. But perhaps some secrets are best left alone ...