Aunt Coby absolutely wants to find out what Uncle Frits is doing.

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Uncle Frits doesn't rely solely on the note attached to the door. The attic door is therefore first neatly locked and then Uncle upstairs sat down among all the collected items, busy with his invention.

However, the locked door has a special effect on aunt. She is not only curious anymore, but now she is also rather tormented and determined to unravel the great secret. The staircase to the attic, unfortunately, is no longer an option, so logically the window remains. The problem is that an attic window sits quite high and aunt doesn't want to step on such a deadly ladder for gold.

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