The NBC Mystery Movie was an "umbrella title" for one of many mystery series shown on a rotating basis in the same time slot on Sunday nights on NBC. The original three series featured were Columbo (1971), McMillan & Wife (1971) and McCloud (1970). Later, several other (often short-lived) series were added to the rotation including Hec Ramsey (1972), Amy Prentiss (1974), McCoy (1975), Quincy M.E. (1976), and Lanigan's Rabbi (1976). The "wheel" concept proved so popular that NBC started a second night on Wednesdays, featuring Banacek (1972), Cool Million (1972), Madigan (1972), Faraday and Company (1973), Tenafly (1973), and The Snoop Sisters (1972). Low ratings forced NBC to move the second wheel to Tuesdays, but it was still canceled in 1974. The Sunday wheel ran its course in 1978.