Jack's a dog trainer and a behavioral specialist -- not to mention the "main squeeze" of smart and sexy, part-time medical examiner, Jamie Cutter. That's why he's standing in a secluded cabin by alike on an icy December evening, with Allison DeMarco lying dead on her kitchen floor, and her high-strung Airedale, Ginger, going ape in the corner. You can't teach an old dog -- or cop -- new tricks, so this homicide has Jack hooked ... especially since poor Ginger seems to be the only witness! In a world of misbehaving mutts and pesky purebreeds, a killer may be waiting to make Jack, Jamie, and their puppy-pals roll over and play dead.