She loves me … she loves me not.

When a homemade, heart-shaped valentine with no signature shows up in Rose Larrabee's mailbox, she is surprised to say the least—as a widow and mother of two young children, she has little time for romance. But what one might mistake for a sweet gift is really a terrifying reminder of the secret she shares with two other women … a secret that has deadly consequences.

I want her … I want her dead.

When the phone rings in the middle of the night, playing a song that chills her to the bone, Rose is determined to keep her family safe from the threat she cannot see but knows is out there ... watching. After one of the other women is murdered, it becomes clear that each valentine is not the gift of a secret admirer but a warning from the madman who is getting all too close to the very heart of her deepest, darkest fears …