Classicly

Brewster's Millions is a humorous fiction story written by George Barr McCutcheon, an American popular novelist and playwright.  He is also the author of Graustark, Beverly of Graustark, Castle Craneycrow, etc.

The story revolves around Montgomery Brewster, a poor man who inherits a large sum of money. However, there is a catch — he has to spend every penny within 30 days, and end up with nothing at that time. Should he make the deadline, he stands to gain an even larger sum; should he fail, he remains penniless.