Selina Cadell

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

Unhappy with his lot in life, Bert Large abandons his plumbing business to start his own restaurant.

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

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.

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

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.