Murder of the Century, 1906

[Snarky Oracle!]

Before the Lindbergh baby, JFK, MLK or OJ's slaughter, there was the first Murder of the Twentieth Century in 1906, when showgirl Evelyn Nesbitt manipulated the husband she didn't love (Harry Shaw) into gunning down the ex-boyfriend she did (architect Stanford White).

From a 1995 episode of The American Experience.

EDIT: Oops, I've already posted this video in the "serial killer" thread, but didn't remember it!

 

[Snarky Oracle!]

A considerably more detailed -- and darker -- telling of the story:

^^
Even Joan Collins, theoretically not born by 1906, gets a mention.