Mrs. Tishell's (Selina Cadell) long-standing crush on Dr. Martin Ellingham takes a dramatic turn in this final episode in the series. Fuelled by a cocktail of drugs Mrs. Tishell can no longer hide her unrequited love for the doc, and decides she must take drastic action. Her husband Clive (Malcolm Storry) arrives back unexpectedly from his work on the oil rigs announcing his intention to retire so they can spend more time together. It's now or never for Mrs. Tishell to make her romantic notions of a relationship with the doc come true. With Doc and Louisa's baby in her care, she boards a bus out of the village leaving an enigmatic message for Dr. Ellingham to meet them at the castle.