On August 26, 1980, a large mysterious device appeared inside Harvey’s Hotel Casino in Stateline, Nevada. The device was a large metallic box with an additional smaller box sitting on top of it. A ransom note was left that asked for three million dollars or the bomb inside the box would detonate. By the time it was all over, a five-story deep crater would be left at the site. The bomb was one of the most sophisticated devices ever constructed at the time, but who built it?