Doctor Down Under

The Sydney Surprise (1x11)

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Dick and Duncan urge Professor Beaumont to have a day off but Dick leaves Duncan in the lurch when he joins a friend on his boat The Sydney Surprise. Duncan goes to find him but Griffin rings Professor Beaumont and sends him to the boat on a supposed emergency. The two doctors are found out - but so is the professor when a rich widow also on board turns out to be his bit on the side.