Once inside the hallway, Booth barricaded the door by wedging a stick between it and the wall. From here, a second door led to Lincoln's box. Evidence shows that, earlier in the day, Booth had bored a peephole in this second door. Booth knew the play Our American Cousin, and waited to time his shot at about 10:15 pm, with the laughter at one of the lines of the play, delivered by actor Harry Hawk: "Well, I guess I know enough to turn you inside out, old gal; you sockdologizing old man-trap!" Lincoln was laughing at this line when Booth opened the door, stepped forward, and shot him from behind with his pistol.