Knight Mansion Normal

[Emma]

Hello
can anyone help me please! I am in Knight Mansion normal in room 17108 and I need a purple key but I only have red and blue keys. I have crawled every floor, jumped into walls and off cliffs but can't find that missing key anywhere. I found two purple keys earlier on the game but used both to open doors. I have played the game lots of times now but am stuck! Does anyone have any hints or clues??
Emma

[otg]

have you tried opening the green door on the far right? Where you came down the pole, from above.
Be careful in the dark...

[Emma]

At last!! Thank you! Had gone in there lots of times but burned myself a couple of times so assumed I needed the lantern but this time I managed it.

thanks agian ;D