Why did the guards call the police


Hint 1 of 7:
You left the phone system intact. Look around the furnace room.

Hint 2 of 7:
Look to the right of the furnace, on the wall.

Hint 3 of 7:
OPEN PHONE BOX   +1

Hint 4 of 7:
Do you have anything that can cut the wires ?

Next