Mark Lesly (April 19, 1959, in Manhattan, New York) acted in only one movie in which he appeared in the credits, The Wanderers, but is recognized to this day for his role as "Ducky Boy Number 2" because of his menacing demeanor, most notably as he stands on the sidelines at the beginning of the climactic football sequence. He later served on the Bernie Goetz jury and wrote a book about it called Subway Gunman.
Lesly served as a juror in the trial of New York City subway gunman Bernhard Goetz. He kept a diary of his experiences which he sold to the New York Post and which was later published as a book.