Muirfield reappears and infiltrates Cats life, costing her some of her closest relationships. Shes 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 Cats 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.
As season two begins, Cat reunites with Vincent after last seasons abduction " but not in the way she planned. Hes changed: his scar has disappeared, his memory has been wiped clean, and he returns as a supercharged beast on a mysterious mission. Cat needs to unravel the reasons behind Vincents change if she has any hope of recovering their epic love, while also trying to solve the secrets that swirl around her own life. With the help of friends J.T., Tess and reformed ADA Lowan, Cat is determined to get answers and save her soul-mate.