Can I Tell You A Secret: the true story behind the shocking case of Britain's most prolific cyberstalker

Imagine you receive a message from an unknown young woman: Can I Tell You A Secret? she says, before sharing shocking details about your life. It might be that your partner has been unfaithful, or that a friend has been dishonest. Eerily, the names she uses are correct. You choose to block the number, and ignore her troubling comments.

But then you receive more messages from a new user, or a relentless series of calls from an unknown number. Things quickly escalate: the woman contacts your friends and family, telling them lies about you, seriously damaging some of your relationships.

However many times you block numbers, or change phones, texts and calls keep coming through. Social media accounts are made in your name, there is an