Daniel, Teresa, and Phillip.

Daniel Sickles, Teresa Bagioli, Phillip Key

In 1859, Dan Sickles, a congressman from New York (and future Union General), was married to the most beautiful woman in Washington, but his other interests, including his mistresses, often kept him away from home. His lonely young wife, Teresa, found comfort in the arms of Philip Barton Key, D.C. District Attorney and son of poet Francis Scott Key. When Sickles learned of their affair, he armed himself and confronted Key on the street. Blinded by rage, he shot and killed his wife’s lover. Was it premeditated murder or temporary insanity?

Read the full story here: Dan Sickle's Temporary Insanity.