Meet Ruby Rose Parker, but whatever you do, if she comes to your door, don't let her in. Patricia Cummings' life is perfect. After returning from her honeymoon in Hawaii she thinks everything will be wonderful from that point forward. She couldn't be farther from the truth. Her blissful atmosphere is shattered the moment she hears a child calling, "Please don't kill me."

She knows who it was-Ruby Parker, the little girl who lives next door with her mother and brother. Patricia has never liked the girl. There is something unsettling about her. She soon discovers there is a good reason for her fears. Ruby is pure evil. Alone, Patricia takes on the most sinister challenge of her life to prove that Ruby killed her mother and stop her from killing again.

The most difficult part is neither her husband nor the police can see beyond the innocent, little girl even as the casualty list continues to grow.