The third season of The Chelsea Detective sees DI Max Arnold and DS Layla Walsh delving once more into the murky crimes of glamorous Chelsea. The team will investigate the tragic death of a 2000s popstar, the discovery of an ex-soldier's body in an allotment, the brutal murder of an antiques dealer, and the mysterious case of a climate scientist found dead in a stolen car. If that wasn't enough to contend with, things at home aren't much simpler for the investigating duo either. Max tries a new approach in his personal life as he embarks on couples therapy with his estranged wife, Astrid. Meanwhile, Layla is still getting used to living in London, while her partner, Jon, is in Exeter. They might be enjoying their independent lives right now but will discover that navigating a long-distance relationship can be trickier than they first thought.