When the evacuation of a central London hospital leads to the discovery of a tragic death, DS Ronnie Brooks (Bradley Walsh) & DS Matt Devlin (Jamie Bamber) investigate. The trail leads them to Kings Cross, where the redevelopment & gentrification of the area is affecting a number of local residents. But has this led someone to commit murder? Could the seemingly vulnerable single mother Dionne Farrah (Venetia Campbell) or her sister Leona be involved? Are caretaker Daniel Matoukou (Babou Ceesay) or local resident Mike Turner (Tony Maudsley) connected to events surrounding the death? & how has the case affected landlady Maureen Walters (Lorraine Ashbourne)? As DI Natalie Chandler (Harriet Walter) pressurises Matt & Ronnie to untangle the case, a disturbing pattern emerges... When a suspect is arrested, Crown Prosecutors James Steel (Ben Daniels) & Alesha Phillips (Freema Agyeman) face an uphill struggle convincing the head of the Crown Prosecution Service.