I've Got Two Windows on My Face

In the olden days you couldn't really see through a window very well. But then a kind of folk law carried on, and people actually thought that if you saw a crime through a window, you couldn't be a reliable witness. So always carry out your murders in a greenhouse or so. These people are just people who saw crimes and didn't report them because they were like, wolld my testimony will be useless. This would explain why he knows about short cases from the lake twentytiet that's true. That might be that this is because old glass used in windows was often warped or blurred. Enoin a it's a theory, isn't it?