The new Broadway play "Punch" is based on the true story of Jacob Dunne, a British man who unintentionally killed a young paramedic named James Hodgkinson after throwing one fatal punch in a bar fight. Actor Will Harrison plays Dunne, who is surprised when one day, the parents of his victim decide to get in touch with him. Harrison talks about the role alongside playwright James Graham, who adapted the play from Dunne's memoir. "Punch" is running through November 2.