What con man made millions in the 1920s using a pyramid scheme?

More Questions:

Who invented the method he called "rope-a-dope"?

Creme de Menthe, fresh cream and what other ingredient are combined to make a Grasshopper cocktail?

Which detective dies in the short story, "The Final Problem"?

In what novel is the language Nadsat spoken?

In "The Twelve Days of Christmas', what did my true love send to me on the seventh day?

What is the capital of Tennessee?

Which US state is home to the Steamboat Geyser?

What peninsula is held together, at its narrowest point, by the Isthmus of Kra?

From whom did the US buy the Virgin Islands?

What vitamin was isolated from fish liver oil in 1917?

Vaselina and Brillantino were alternate names which film?

What former politician succeeded Judge Joseph Wapner on "The People's Court" in 1997?

Which Paul Simon album won a Grammy for album of the year in 1987?

What 1980s TV show starred Bruce Willis in a detective agency?

The Treaty of Ghent was signed in what country?