Guest Stars Anna Maxwell Martin as Kelly Major Rosie Cavaliero as DCS Dennett Amanda Payton as Dr. Alison Parfit Emily Lloyd-Saini as DI Ryle Steve Oram as DI Gilbert Michelle Greenidge as PC Williams (not Judy) Anna Leong Brophy as The Voice of A.L. Louise Stewart as SOCO Michael Armstrong as Kelly's Patient Gemma Arrowsmith as Mrs. Barlow
