Rachel Harris was abandoned as a baby on the steps of a church-run children's home, fostered and later adopted. Who was her birth mother and what were the circumstances which led her to give up her baby?

Searching for someone who doesn't want to be found seems a hopeless task until Rachel meets Matthew Williams, a Church of England clergyman.

Then the anonymous and increasingly frightening attempts to end their relationship begin. Are these actions connected to the mysterious events surrounding Rachel's birth?