What if the people you trust are the ones you should fear most?

We all recognise them: those who send prickles up the back of our necks. The charmers, the liars, the manipulators. Those who have the potential to go that one step too far.

Each week Jessamine Gooch broadcasts a radio show about convicted killers. But when she is approached for help in solving a current case, around a troubled missing woman, she faiis to realise there is a dark figure closer to home, one that threatens the safety of her own family . . .