David Janssen (March 27, 1931 – February 13, 1980) was an American film and television actor who is best known for his starring role as Dr. Richard Kimble in the television series The Fugitive (1963–1967). Janssen also had the title roles in three other series: Richard Diamond, Private Detective; Harry O; and O'Hara, U.S. Treasury.In 1996 TV Guide ranked him number 36 on its 50 Greatest TV Stars of All Time list.