Becky Collins was still mourning the loss of her beloved cat, Marty, who had lived to the impressive age of twenty-one. Hoping to ease the emptiness, she adopted two adorable kittens from a rescue centre. One of the kittens shocks Becky by possessing the ability to speak. Becky soon realized there was something very strange about the kitten that called herself Penny.

When her other kitten, Cally, was catnapped from the backyard, Becky was devastated. She had never felt such a gut-wrenching sense of loss and worry as she did that day, the brazen act leaving her stunned and heartbroken. With Penny's help, she scoured the neighbourhood, until they ended up at a rundown house a few streets away.

Inside, the house was eerily silent. Becky was panicked and horrified when she found the body of a woman sprawled lifeless on the floor. Penny recognised the woman as the one who had taken Cally.

As the truth was revealed, Becky found herself facing a reality she never imagined existed. And when the real killer emerged, she realised her quiet life would never be the same?forever changed by the kitten called Penny.