How do I open the safe?


Hint 1 of 12:
In case you didn't know, the safe is in Dr. Fred's office, behind the
portrait.

Hint 2 of 12:
You will need to talk to several people in the present who can tell you
something about Dr. Fred and the safe.

Hint 3 of 12:
Nurse Edna will tell you that Dr. Fred opens the safe while he's
sleepwalking.  If only you could get him to go to sleep.

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