The 30 Second Mystery 22 - What?
 

There are four categories: Who, What, Where and Why. Some will be easy, some not. I have as many as six clues to help you along, which I'll supply as needed.

Please limit yourself to one guess, and another guess for each clue I supply. No questions asking for help or hints are allowed. Partially correct answers won't be acknowledged.

Wild guesses and comments are fine. In fact, they can add to the mystery and are fun to read.

The Case:
A steady stream of people enter a man's place of business and remove treasured belongings. The people do not pay for what they take.

The Mystery:
What type of business employs the man and what are the people taking?

library: Books

I wonder if bank teller and ATM would also work here.

shakran gets it for 5 points.

nash, I think in the case of an ATM that people are technically "paying" for the money they withdraw.

Stay tuned...