To follow up on the anon about the Cairo Overcoat, the whole thing is a pun, because a Chicago Overcoat is slang for a coffin, making reference to the high gangster activity in Chicago in the 20's. This was MK's ship in Problem Sleuth. A Cairo Overcoat, then, would be an Egyptian coffin, ie: a sarcophagus, in addition to being a literal overcoat. It's also worth noting that "sarcophagus" is literally Greek for "consumer of flesh" (sarc-o-phagus), which is perfect for LE's aesthetic.