BrokenTune

Well, I originally thought about The Tiger in the Smoke for this square, but I've tried to get into that book a couple of times before and just couldn't.

Also, I picked up Josephine Tey's The Man in the Queue this morning and read more pages than I intended, so I might as well  finish the book for the Darkest London square. The connection here is that the book starts with a murder in the heart of London's theatre-land.