Where is the key to Jaimeson's office?


Hint 1 of 5:
Have you been to the zoo yet?

Hint 2 of 5:
Try searching Gardner's body to see if he has a key.

Hint 3 of 5:
Nope.  No key.  You'll have to find another way to get in that office.

Hint 4 of 5:
You can probably break the window with something heavy enough.

Hint 5 of 5:
No, the hammer isn't it.  The item you need is very nearby.