Selina Cadell

When a nasty stomach bug sweeps through Portwenn, Martin takes to the radio to alert residents to the danger.

Louisa's ex returns to Portwenn hoping for a reunion, and Martin sees a patient who has a history of self-injury.

Martin must treat an elderly man with a horrible smell, and a local radio host appears to have a drinking problem.

Martin's house call to the Flint brothers leads to a diagnosis of food poisoning, and Al learns that Bert is not his natural father.

A Salvation Army member arrives in Portwenn to try to trace a missing woman, and PC Mark Mylow's medical check has a shock result.

A new police officer, who has narcolepsy, replaces Mark Mylow, and Martin treats a girl who's been taking her mother's diet pills.