Interview with Simon Louvish, author of Keystone: The Life and Clowns of Mack Sennett (Faber and Faber, Inc.), an account of the life and career of "the king of comedy," Mack Sennett. Louvish’s book traces the trajectory of this Irish-Catholic movie mogul as well as what Louvish calls "Sennett’s…America, contagious, nervous, alays at high speed." Part one of two.