The Tavy Gang Adventures is set in the 60's in the fictitious seaside town of Darnwall in the West Country. The adventures are recalled in the eyes of the fictious character of retired Policeman Jonathan Tavy. As an 11 year old boy JT tells of the adventures he had with his trusted gang of best friend Roley, his sister Bets and her friend Zee. Led by JT they investigate the crimes that are committed in Darnwall and set about bringing the villains to justice. JT's hero is Sherlock Holmes and like him JT uses the aid of science to unravel the clues. Just as Sherlock Holmes adversary was Moriaty, JT's was The Man With His Dog and JT sets out to thwart this villain's crimes at every opportunity.

The 60's was a time when life was a lot simpler than it is today. TV was relatively new, there were no mobile phones or internet and children back then had to use their imagination and make their own entertainment.