Melanie Drifts always wanted to be a detective; Ever since her mum was murdered she had her heart set on it. When her new job as a probationary agent for MI6 starts, Melanie enlists her new colleagues into solving her mother's abandoned case. Things are looking up and she thinks she's got her suspect, when the most threatening breach of the UK's security system happens right there in the MI6 headquarters. A new terrorist threat lurks just round the corner, all Melanie's fellow agent's lives are at risk...and she's the only one who can stop it from happening.