Devastated by the sudden death of her husband Ryan, policewoman Jo Gillespie wants to know what happened to the man she loved. Ryan was working undercover when he was killed in suspicious circumstances and the details surrounding his death are shrouded in mystery. Her questions blocked at every turn by senior officers in the police force, Jo refuses to be swayed from discovering the truth. With only her friend and colleague Jack Clark on her side, Jo puts her safety and future in danger as she delves deep into the secret inner workings of the undercover police world and discovers that the truth she wants to reveal may be a little too close to home.