Cat Chandler (Kristin Kreuk) is a smart, no-nonsense homicide detective, haunted by her own tragic past.
When she was a teenager, Cat witnessed the murder of her mother at the hands of two gunmen. Cat would have been killed too, but someone, or something, saved her. No one has ever believed her, but she knows it wasn't a human that attacked the assassins... it was animal.
Now a capable police detective working with her equally talented partner, Tess Vargas (Nina Lisandrello), her latest case leads to the discovery fingerprints of a handsome doctor called Vincent Keller (Jay Ryan), who was reportedly killed by enemy fire while serving in Afghanistan in 2002.
Vincent hides a dark secret - when he's enraged, he becomes a terrifying beast, unable to control his super-strength and heightened senses. Cat is stunned when Vincent admits he was the 'animal' who saved her the night of her mother's murder.
For years he's spent time hiding in the shadows, watching over Cat and other innocents, but it's time to step out and help Cat bring criminals to justice.