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He was a teen movie idol sensation, a major TV star for decades, and the son of legendary actress Helen Hayes. His name was James MacArthur, and he died too young. As documented by The Associated Press and FoxNews.com, MacArthur enjoyed a career that spanned over forty years. He was best known for his role as Detective Danny "Danno" Williams on the original version of the television crime drama, Hawaii Five-0, which aired on CBS from 1968 to 1980. Episodes often concluded with detective Steve McGarrett, the lead character (as played by Jack Lord), speaking what became the famed pop-culture catchphrase: "Book 'em, Danno."