Would you know if someone was watching you?

In the dark days since the sudden death of her surgeon husband, Julia's main worry has always been Tash. Her student daughter was broken--she worshipped her father. But six months on, Julia thinks the light is returning. She is about to find out that she's wrong.

When she saves the life of a boy who's been hanging around her beach cottage, the questions start. All she has to go on is the butterfly tattoo on his wrist, but who is he? What was he doing there? And why was her late husband's watch in his bag? Julia wants to believe it's a casual theft, but an ominous arrival in the post confirms her suspicion that there is more to it than meets the eye.

As Tash remembers a string of strange incidents she had previously brushed off, Julia realises they are both being watched. Someone's been toying with them, trying to frighten them, but why?

Determined to protect her daughter, Julia races to discover the boy's identity. But what she doesn't realise is that the truth is right in front of her. Will she see it before it's too late?