Answer:
I'm a ruler with 12 agents. Half of them work in the darkness. Who am I?
I am drawn by everyone without pen or pencil. What am I?
I tremble at each breath of air and yet can heaviest burdens bear.
I am a box which holds keys but not locks. With the right combination, I may unlock your soul. What am I?
My first half means container. Not a lot of people understand my language.
Why was the cook arrested?