Whiffy Newton in the Riddle of the Two-Tone Trousers (Whiffy Newton #2) :

Someone is stealing all the trousers in Kentwood and, this time, Whiffy's hapless inventor father, Dr Bruce Newton, has nothing to do with it. Or does he? Trousers are being daringly snatched in broad daylight, taken apart, and horribly put back together, so that bizarre, two-tone trousers are appe