New mysteries and puzzling cases await DI Humphrey Goodman and the team in Shipton Abbott. Fact and folklore blur as they investigate the death of a novelist who predicted their demise, a magical night of Dark Morris that soon turns sour, a stolen treasure map that suddenly reappears, and the alleged sighting of a vengeful mermaid lurking out at sea.

Humphrey and Martha launch into married life as they search for a new home, whilst Humphrey wrestles with an impossible decision that may change the lives of everyone at the station forever.

Set against the idyllic backdrops of Devon and Cornwall, there are plenty of cases to keep the team on their toes, including a body found in the river on the county border, a baffling chocolate box poisoning, a historic farming feud and a spiking incident on the water.

Away from the police station, Martha and Humphrey must overcome unexpected hurdles as foster parents, while the reappearance of Martha's old flame Archie presents an unexpected challenge. While Esther navigates a surprise encounter in her private life, a health scare for Anne stirs up painful memories, and Kelby embarks on a journey of personal growth.

Shipton Abbott continues to keep DI Humphrey Goodman and his team busy, with a baffling new crime each episode. From a death on a steam train to a missing teacher, the team have their work cut out. Even more so with Police HQ's threat of the local station house closure hanging over them – the pressure is on to get results.