When a body is found in the river on the county border, Humphrey and Esther are brought face to face with their Cornish counterparts.

An old friend of Kelby starts to receive malicious messages from an unknown source. Before danger strikes, can the team uncover who's hiding behind the screen?

A local chocolatier falls under suspicion after three customers are poisoned by her confections. The team must work quickly to uncover the culprit before public panic spreads.

An old sailing rivalry resurfaces at the regatta when a sailor collapses mid-race. A tampered smoothie is identified as the cause, casting suspicion on Martha.

The myth of the Cornman turns real when a masked figure strikes a local farm. With the farm’s future at risk, can Humphrey unmask the saboteur before their livelihood is wiped out?

When nurse Lucy vanishes on her way to work, suspicion falls on Josh Woods – Kelby’s rival. But could the legend of the Devil’s Hump hold a vital clue to solving her disappearance?