Richard Roundtree has streetwise charm as "the black private dick who's a sex machine with all the chicks" in an action-packed blaxploitation triple bill. Hired to find a Harlem gangster's kidnapped daughter, "Shaft" (1971) must save her before a citywide gang war erupts. Moses Gunn, Charles Cioffi co-star. A friend's murder leads Roundtree into a bloody mob feud in "Shaft's Big Score" (1972), with Gunn and Julius Harris. And Roundtree goes undercover in the "mother country" to bring down a modern-day slave ring, in "Shaft in Africa" (1973). Frank Finlay, Vonetta McGee co-star. 5 1/4 hrs. total. Standard; Soundtracks: English Dolby Digital mono, French Dolby Digital mono.