It's just another emergency call until the call handler recognises the voice of her own attacker. Introverted 999 call handler Hannah receives a call from Tina, who has been drugged and date raped. Before the line goes dead, the attacker shouts and Hannah recognises his voice as the man who raped her over a year ago. This makes her the only surviving witness in a case against a rapist and murderer. It's time to report her own attack. But filing the report will make her his target. Hannah's only hope is to identify the attacker so that he can be found and arrested. On the run and hunted, can she bring the killer to justice?