Henry Rathbone in the context of "John Wilkes Booth"

Assassination is the willful killing, by a sudden or secret attack, of a person—especially a prominent or important one—typically for political or ideological reasons.

Assassinations may be ordered by both individuals and organizations and carried out by their accomplices. Acts of assassination have been performed since ancient times. A person who carries out an assassination is called an assassin.

On April 14, 1865, Abraham Lincoln, the 16th president of the United States, was shot at Ford's Theatre in Washington, D.C., one month into his second term and towards the conclusion of the American Civil War. Lincoln was watching the play Our American Cousin with his wife Mary Todd, Major Henry Rathbone, and Rathbone's fiancé Clara Harris when John Wilkes Booth, an actor and Confederate sympathizer, shot him in the head. Lincoln was taken to the Petersen House across the street, where he died the following morning.

With Union victory imminent, Booth and his conspirators, including Lewis Powell, David Herold, and George Atzerodt, originally plotted to kidnap Lincoln to aid the Confederacy. After that plan failed to materialize, they decided to assassinate him, Secretary of State William H. Seward, and Vice President Andrew Johnson. Booth hoped that eliminating the three most important officials of the federal government would revive the Confederate cause. Powell and Herold were assigned to kill Seward, while Atzerodt was assigned to kill Johnson. Booth succeeded in killing Lincoln, but Powell only managed to wound Seward, while Atzerodt became drunk and never targeted Johnson.

Clara Hamilton Harris (September 9, 1834 – December 24, 1883) was an American socialite. She and her then fiancé, and future husband, Henry Rathbone, were the guests of President Abraham Lincoln the night he was shot at Ford's Theatre. Rathbone's mental state deteriorated after the assassination, and in 1883, Harris was murdered by him.