This is the main puzzle on this case. Nanny won't let you in until you have stopped all the weird acts around the house.
This is the low-spoiler guide for "Entering Nanny's room" 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.