One part of the ritual of returning the demon home is surronding it with with runes.
This is the low-spoiler guide for "Surround the demon with runes" puzzle in The Darkside Detective - A Fumble in the Dark. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.