Short answers, pulled from the story.
John Wilkes Booth, a famous actor from Maryland and Confederate sympathizer, assassinated Abraham Lincoln. He was initiated into the pro-Confederate Knights of the Golden Circle in late 1860 and had previously performed at Ford's Theatre where he knew the layout.
Booth shot Abraham Lincoln on the 14th of April 1865, at about 10:15 pm inside the Presidential Box at Ford's Theatre in Washington, D.C. The bullet entered Lincoln's skull behind his left ear and passed through his brain before coming to rest near the front of the skull.
Mary Surratt was found guilty by a military tribunal and sentenced to death for her role in the conspiracy. She was hanged in the Old Arsenal Penitentiary on the 7th of July 1865, becoming the first woman executed by the United States government.
Scores of people including tangential associates were arrested during the largest hunt in U.S. history involving thousands of federal troops. Samuel Mudd, Samuel Arnold, Michael O'Laughlen, and Edmund Spangler received prison sentences or pardons while Lewis Powell, David Herold, George Atzerodt, and Mary Surratt were executed.
John Wilkes Booth died three hours after being shot on the 26th of April 1865, on the porch of Richard H. Garrett's farm in King George County, Virginia. His last words to a soldier were 'Useless ... useless' as he gazed at his hands before dying.