 Halsey played supporting and co-starring roles in Hollywood, having appeared in such films as "Return of the Fly" (1959), "Jet Over the Atlantic" (1959), "The Best of Everything" (1959), "Return to Peyton Place" (1961) and "Twice-Told Tales " (1963).By the early 1960s, he relocated to Italy where he found himself in demand in adventurous films such as "Seven Swords for the King" (1962) or "The Avenger of Venice" (1964), being often cast a swashbuckling hero.He also appeared in a few Spaghetti Westerns and Eurospy films, including "Espionage in Lisbon" (1965), "Kill Johnny Ringo" (1966), "Today We Kill, Tomorrow We Die!"