With her son grown, single mum Pearl (Kerry Godliman, After Life) pursues her lifelong dream and starts a private detective agency, which she runs from her family seafood restaurant in the coastal town of Whitstable. Drawn by her caring but no-nonsense nature, residents flock to her with all kinds of cases but when she discovers her friend and oyster supplier dead, DCI Mike McGuire (Howard Charles, Shadow and Bone) arrives from London to lead the investigation. Gruff and aloof, Mike initially clashes with Pearl, but they soon find themselves working together to solve everything from murders to boat sabotage to mysterious packages left by anonymous benefactors. Their relationship is charged by a determination to outdo each other and a simmering mutual attraction. When they compete, sparks fly and tempers flare; when they work together, they make a hell of a team. Also starring Frances Barber (Silk), Rohan Nedd (Harry Wild) and Robert Webb (Peep Show) and guest starring Cathy Tyson (Criminal Record) and Stephanie Beacham (Coronation Street), this mystery series is based on the bestselling books by Julie Wassmer.