There’s money in them thar shoes – one hundred sparklers a week, if this ad is to be believed. The operative word, of course, being “if.”
Among the fantastic and fashionable lot is something referred to as “mystery shoes.” None of the shoes pictured look particularly mysterious. But since the ad is from Startling Detective (circa 1964) perhaps one is supposed to sense which ones they are. And then you can wear them while taking one of the many at-home become-a-detective courses. Mind you, once you crack the case of How To Sell Boring Ugly Shoes in a shoe store you set up at home, you ought to be able to solve anything.