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Season 1 - Mar. 26, 1989
Season 2 - Sep. 20, 1989
Season 3 - Sep. 28, 1990
Season 4 - Sep. 18, 1991
Season 5 - Sep. 22, 1992

Quantum Leap Season 4 Episode 18
HD
Overview:
May 10, 1958: Sam finds himself behind the wheel of a New York taxicab, in the life of Max Greenman, a driver striving to win his own tag, a license to drive his own cab. His mission is aided with the help of a woman who claims to be a guardian angel.