Romance is in the salty air of Portwenn: Doc Martin is pursued by a glamorous divorcée. Aunt Joan is wooed by a handsome artist 30 years her junior.
With the full moon looming and a house full of werewolves, pressure is seriously mounting on Mitchell. Meanwhile, Nancy gets her big break in the Box Tunnel Investigation.
George is shocked to discover that his father has died. But not as shocked as when he meets the ghost of George Senior. Meanwhile, the Box Tunnel investigation closes in on Mitchell.