Sarah is a streetwise outsider, currently on the run from a bad relationship and painfully separated from her own daughter. When an eerily lookalike stranger commits a shocking suicide right in front of her, Sarah sees a potential solution to all her problems by assuming the dead woman's identity and clearing out her bank account. But instead, she stumbles headlong into a kaleidoscopic thriller mystery, and soon uncovers an earth-shattering secret: she is a clone. As Sarah searches for answers, she soon learns there are more like her out there, genetically identical individuals, nurtured in wildly different circumstances. And someone is trying to kill them off, one by one.

Season 3 plunges the clone sisterhood into unexpected territory with the realization that they're not alone. Just when they thought they knew their enemies and allies, season 3 reveals our clones are more vulnerable than ever before. Highly trained, identical male-soldiers raise more questions than answers. Who are these new clones? Who created them? And more importantly, why do they exist? Sarah, Cosima, Alison and Helena are stronger together than they are apart, but this season will put that bond to the test. Will they forge towards their truth, or fall at the feet of those who seek to control them?