We go back in time to one of the most vicious fights of the 19th century: the war between Thomas Edison and Nicholas Tesla over who would power the United States.

This battle last nearly a decade, and was marked by brutal commercial competition, a bizarrely large amount of public animal murder, and a propaganda campaign that would make Donald Trump blush. It's a war that's opened up again in the age of computers, and this time nobody can predict how it will end.