Damian Drooth, Supersleuth

Damian Drooth has already solved three cases to great acclaim (and uproarious chaos!), and now he is passing on his skills to eager pupils. He has decided to help a friendly old man who thinks that his precious and hard-won inventions are being ripped off by an unscrupulous neighbour. Naturally, the meeting of the Young Inventors is a good place to start - and using all his old skills, he does uncover the bad guy...