What was in the strange bundle that Mr Fellows was seen carrying when he fled his house in the dead of night? And who else is trying to get hold of it? A new puzzle for the Five Find-Outers and Dog to solve!
This is a strange mystery. Maybe it should be called The Mystery of the Strange Mystery, because not only is the mystery itself strange, but the way the Find-Outers get involved is strange too. That is, compared with the way they normally get involved. This isn't the first mystery they've stumbled upon accidentally, nor is it the first time they've been completely stumped. But unlike other mysteries or adventures, they don't actually get to solve this one. All they do is relay what they know to Chief Inspector Jenks and his Very Important Hush-Hush colleague, who in turn explain the story behind the mystery and the strange clues. And the strangeness doesn't end there. In this, Mr Goon not only loses his temper (as usual) but actually goes at Fatty and attacks him! And at the end, Mr Goon is invited to tea at Fatty's house—which he accepts and seems to enjoy. Strange indeed!