Black Button

Prepare to be blown out of the water.

Mr Roberts finds himself awoken inexplicably in a white room. A man sits before him at a desk and in between them stands a black button. If Mr Roberts pushes it, he will receive a briefcase filled with millions of dollars. Or he can take the key to the door and leave penniless. The catch? Pushing the button will result in the death of a human being. What would you do?