"A Cat In Hull's Chance" 20 October 1990
James and Helen have different ideas about dealing with daughter Rosie's wish to become a vet like her father. Helen wants to encourage her, while James sets out to show Rosie the less pleasant side of the practice. Under Siegfried's watch, Mrs Pettinger's kitten, Prudence, escapes and hitches a ride to Hull. While she is lost, Siegfried tells James and Tristan that it is time — with no concern about cost — to expand the surgery to include an observatory wing; when Prudence is found, however, he conveniently forgets all about it. James wants to put a tennis court in their back garden.
Characters: Mrs Alton, Rosie Herriot, Jimmy Herriot, Mrs Pettinger, Bowling, Keith Lawrence, Angela Lawrence, Jack Hucknall.
Tristan Farnon returns to the series