Do you believe in love at first sight? Holly does in spite of everything that's happened in her life. Sometimes the thought that her soulmate is out there is the only thing that keeps her going. Then she hears her favourite song being played in a train station. She's drawn to where the sound is coming from as if by a magnetic force. There is a handsome young man sitting at the piano who smiles at her and she feels that spark she's always dreamt of. She asks if she can join him and sings along seeing his face light up. He's called Mark she later discovers. And he feels the same. They both feel like they've been hit with a thunderbolt. But even though it seems like they've known each other for a lifetime the truth is that they're strangers. Because Holly has secrets. And so does Mark. And one of them might just kill to keep them. . .
