HELP in Watcher's Keep 2nd level (Spoilers)

[Lord Olecram]

Does anyone know how to solve the labs puzzle? I've been to all rooms except the fire lab, got the slime key but can't find the air key, which I need to use the fan and open some doors I guess. What about the other keys where are they? I've already searched every shelve, vase and corpse... I'm thinking maybe that little imp in the fire library got it, but he's gone away

[glory]

spoiler alert
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the key to the air lab should be in the lab itself...all the keys are either in a shelf or desk or on a dead avater in the room the previous key opened. as far as solving the puzzle...just read the hints also found in the labs and its really quite easy. hint...starting with the air lab and going clockwise each lab can weaken or destroy the creatures in the next lab.

[Agnocar]

Spoiler
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You'll find the Air Scepter on the body of one of the air gaurdians you killed earlier in the fan room. The Poison scepter can be found on the body of the giant snake in the poison challenge-room. They can be hard to see ( got me for a while ), but just hit TAB and they will show up well, as a staff on the ground.
Hope this helps!