For ten years after WWII, Dean Martin and Jerry Lewis weren't only the most successful show business act in history, they were history. Starting as a fill-in for another act in Atlantic city, their improvised, anarchic routines soon sold out all the greatest venues in America. They made films, they made millions. They made a legend. But amidst the dazzling success and the late night laughter, tensions developed between the reserved straight man, Martin, and the manic goon, Lewis. When the duo, who had reinvented the comic double-act, split acrimoniously in 1956 they didn't speak to one...