Glengarry Glen Ross by David Mamet

Pulitzer Prize winning play, Glengarry Glen Ross depicts a group of real estate salesmen as they struggle to survive in a cut-throat world. Their office has set up a competition: the salesman who makes the highest dollar sales will win a new Cadillac; the loser will be fired. The contest is weighted towards those who are already winning - if you haven't made a sale lately, you don't get any leads (names of people who are likely able to purchase real estate). And now there's a robbery at the office, stealing phones, contracts and leads. Who could have done this? This is Mamet at his best, both funny and sad at the same time.