Where work may pile up
The anagrammed theme, in this case "inlets" scrambled in theme answers, is new to me. It seems particularly challenging for a constructor. I guess the grid would also have worked with "silent" if the lower right section were altered. And in that case, the silent anagram would have a cryptologic air.
I seem to remember "ouchie" not OWIE, but maybe it has changed in the last forty years. In any event, I'd go with "Mandel in London."