Catherine “Cat” Chandler (Kristin Kreuk, “Smallville,” “Chuck”) is a smart, no-nonsense detective, spurred to action after hired killers murdered her mother – and would have murdered Cat, too – if something, some beast, hadn’t stopped them. Ten years later, a case brings her to Vincent Keller (Jay Ryan, “Top of the Lake,” “Terra Nova”), a supposedly deceased soldier living off the grid with the help of his loyal childhood friend and scientist, J.T. Forbes (Austin Basis, “Life Unexpected”). Cat is shocked to discover that her mother was involved in an experiment to make super-soldiers, and when the experiment went wrong, the soldiers, including Vincent, were turned into uncontrollable beasts. Vincent managed to escape the experiment alive, but is now being hunted by Muirfield, the organization that sent the gunmen after Cat’s mother. Vincent had been tracking them, which led him to be in the right place to save Cat on that terrible night ten years ago. He’s been drawn to her ever since. Cat, too, is drawn to Vincent, and an epic love begins.
Muirfield reappears and infiltrates Cat’s life, costing her some of her closest relationships. She’s lied to her own sister, Heather (guest star Nicole Gale Anderson), and to her best friend and partner, Detective Tess Vargas (Nina Lisandrello, “Nurse Jackie”), in order to protect them. When police cases involving “beast” elements go unsolved, Assistant District Attorney Gabriel Lowan (Sendhil Ramamurthy, “Covert Affairs,” “Heroes”) is assigned to track down this mysterious “vigilante.” Lowan, who uses questionable methods in his attempt to capture this beast, quickly recognizes Cat’s attachment to the creature, admits he is also a beast, and kidnaps Cat in the hopes of luring Vincent to his death. In the final battle, Gabe is seriously wounded by mysterious men in a helicopter who capture Vincent, separating Cat from the man she loves and has sacrificed everything for.