Mini-Minor Morris and his six accomplices in the Queen Street Gng face their toughest assignment ever when Mini's father the Professor mysteriously vanishes with his great new invention. Has he absconded with a National Secret? Or been kidnapped by an inenious band of crooks?
A light little mystery in the vein of The Mad Scientists Club or the Bill Bergson series. Undersized genius Mini-Minor Morris and his pals in the Queen Street Gang tackle crooks and spies with juvenile ingenuity. When Mini-Minor's scientist father disappears, along with his newly-invented energy source, the Silver Egg, he is suspected of defecting to a foreign power. Mini-Minor knows this can't be true, and with his pals, he sets out to find and rescue his father. They meet every challenge with aplomb, sometimes with Mini-Minor's scientific know-how, sometimes with a kid's knowledge of how grown-ups think (or don't). It doesn't have the underlying seriousness of Emil and the Detectives or of The Horse Without a Head (aka A Hundred Million Francs), and the suspense never becomes too unnerving, but it remains an enjoyable read.
Although I don't remember many details of this book, I remember loving it as a child. The science-orientated mysteries are clever and interesting. Well worth searching out a copy.