Doctor Down Under
The Name of the Game (1x12)
:
When Professor Beaumont asks to use the doctors' flat for the afternoon Duncan assumes it's to entertain his bit on the side and when Griffin overhears Duncan tell Dick he is only too happy to lead the professor's wife to the flat. In fact the young lady in question is the professor's niece,whom he is helping with her exams but Beaumont doesn't want his wife to find out, so when Dick arrives with his card school Beaumont joins in. Soon Mrs. Beaumont has taken his place and is winning money from everybody at the table.