Pearl agrees to help a woman who received a note claiming her missing husband did not die from suicide. Pearl connects the case to a grief-counseling church group and a drowning years ago. As Christmas approaches, Mike sinks into a depression, despite taking on a new flat in Whitstable.

When a mother takes her daughter out for a boat ride despite the father's wishes, the boat starts taking on water and the two need to be rescued. Was it an accident, or were they targeted? Pearl investigates while Mike tries to enjoy his time off from police duty in the days before New Year's Eve.

A 30-year-old skeleton washes up on the shore, and the victim has a very personal connection to Pearl. Pearl's budding romance with Mike is threatened when he identifies a suspect close to home.

Pearl Nolan always wanted to be a detective, but life - and a teenage pregnancy - got in the way of a police career, and instead she built up a successful seafood restaurant in her coastal hometown of Whitstable - famous for its native oysters. Now, at 39, and with son Charlie away at university, Pearl finds herself suffering from empty nest syndrome...until she discovers the drowned body of local oyster fisherman Vinnie Rowe, weighted down with...