Talented search and rescue dog trainer Fiona Bristow escaped the clutches of a serial killer several years before, but not before he murdered her fiance and her beloved dog. She has retreated to a cabin in the wilderness and is wary of forming bonds with anyone, but handsome newcomer and talented carpenter Simon has an unruly puppy to train and soon man and dog charm their way into Fiona's life. But just when she starts to relax, it becomes clear a copycat murderer is on the loose, and making his way closer and closer towards her with unfinished business on his mind...