When people start spontaneously turning hard as stone—with no real connection between victims—Nathan, Duke, and Lexie find themselves in a race against time to find the troubled person responsible.
The Strategic Response Unit is called when a mother and daughter are abducted, and the only clue they have about the culprit could expose a dark family secret.
Lexa's (Karen Cliche) suspicions lead Mutant X to unveil a traveling death camp, which is posed as a circus for mutant refugees and Mutant X's enemy within the Dominion.
Moving in on a Red Flag stranglehold, Dr. Rosen (David Strathairn) and his team encounter a group of Alphas with unfathomable abilities. After they escape capture, Gary (Ryan Cartwright) connects with their prisoner, Anna.
A man escapes custody before his trial, kills two policemen, and kidnaps a woman.