║╓ NB: some topics disappear after you chose one sentence.
You will have to go
back and re-start the conversation with a character in order to be
able to go
through all topics. You can skip topics that you already did by
pressing the
║╝Escape║╞ button. Some other topics will appear in the option
only after your
character has completed certain tasks or found certain objects,
therefore you
might have to do things and then go back and speak again with a
character. Do
not hesitate to speak again and again with the same person.

Go through the right door (Chriss║╞ lab.).
Talk with Chriss (all topics).
Use magnifier glass on the upper right part of the screen (the
shelf with white
and orange jars). Pick the fingerprint powder box (black).
Use magnifier glass on the left shelf (chemical bottles). You
cannot pick
anything.

Exit the lab.
Go to the lower part of the screen.
Go to the second section of the hall.
Go into your office.
Use the magnifier glass on the drawers under the book shelves.
(You can open
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