Gripping sci-fi thriller, starring Tatiana Maslany as Sarah Manning, an outsider and orphan whose life changes dramatically after witnessing the suicide of a woman who looks just like her. After assuming the dead woman's identity, bank account and boyfriend, Sarah quickly finds herself caught in the middle of a deadly conspiracy when she makes the discovery that she is a clone. Who is she and how many others like her are they? Who created her and what will they do to control the science?