'I keep feeling like I'm being watched - dropping the boys off at school, choosing wine at the supermarket - but when I turn around there's nobody there...' When single mother Darcy's son falls from a rope bridge at a local playground, life stands still. She clutches his small, limp body, frozen, until a pair of strong hands push her aside, and she watches as George, a local doctor, saves her son's life. George is a single parent too, and with his twinkling hazel eyes, easy charm, and lack of wedding band is almost too good to be true, but coffee becomes lunch, lunch becomes dinner, and soon they can't go an evening without seeing each other. When he invites her to move into his beautiful home with its sprawling garden for her boys, Darcy doesn't hesitate. But as Darcy is settling in, she receives a bunch of flowers with a chilling message. George says they're from an obsessed ex-girlfriend, Opal, and days later Opal turns up at Darcy's son's football match. She claims to have shocking information that could threaten George's custody of his daughter. Darcy doesn't know who to trust, but she's starting to suspect that, whatever the truth, she might have put her beloved boys into terrible danger ...