This guy is not top of my list of master criminals though. That honour goes to the bloke who set out to rob a jewellers. Faced with the problem of how to break the plate glass front window he spied a manhole cover set in the pavement behind him. So he prised off the cover and stepped up to the window. Then, deciding he needed a bit of a runup before hurling the cover, took a couple paces backwards and .......... yes, he fell down the manhole. Which is where he was when the police turned up a few minutes later.
Being an ideological sound sort of character (this is what we had before PC came in, and is considerably superior) I would normally describe the hole as an inspection chamber but this doesn't really fit the story.