Martha is played by Sally Bretton, a 42-year-old British actress known for playing Lucy Adams in Not Going Out.
She has also starred in Green Wing and The Office, as well as Night and Day.
A description of the series reads: “One of the show’s most popular characters, the endearingly awkward and rather unconventional DI Humphrey Goodman, led the island’s police team in solving the most mysterious of murders.
“However, when Humphrey fell hopelessly in love with island tourist Martha Lloyd, he decided to leave the sun-soaked paradise to follow her back to the colder climes of the United Kingdom.
“Seeking a quieter life away from the stress of the city, Humphrey has taken a job as Detective Inspector in fiancée Martha’s hometown.