Created by Harve Bennett Starring David McCallum Melinda O. Fee Craig Stevens Theme music composer Henry Mancini Composer Pete Rugolo David McCallum as Dr. Daniel Westin Melinda O. Fee as Kate Westin Jackie Cooper as Walter Carlson (pilot episode only) Craig Stevens as Walter Carlson Henry Darrow as Dr. Nick Maggio (pilot episode only) Charles Aidman as Dr. Nick Maggio ("An Attempt to Save Face" only)