Three is a Magic Number
Episode: 1x01 | Airdate: Jan 6, 1973
Episode: 1x01 | Airdate: Jan 6, 1973
Episode: 1x02 | Airdate: Jan 13, 1973
Episode: 1x03 | Airdate: Jan 20, 1973
Episode: 1x04 | Airdate: Jan 27, 1973
Episode: 1x05 | Airdate: Feb 3, 1973
Episode: 1x06 | Airdate: Feb 10, 1973
Episode: 1x07 | Airdate: Feb 17, 1973
Episode: 1x08 | Airdate: Feb 24, 1973
Episode: 1x09 | Airdate: Mar 3, 1973
Episode: 1x10 | Airdate: Mar 24, 1973
Episode: 1x11 | Airdate: Mar 31, 1973
Episode: 2x01 | Airdate: Sep 15, 1973
Episode: 2x02 | Airdate: Sep 22, 1973
Episode: 2x03 | Airdate: Nov 17, 1973
Episode: 2x04 | Airdate: Feb 23, 1974
Episode: 2x05 | Airdate: Mar 2, 1974
Episode: 2x06 | Airdate: Apr 13, 1974
Episode: 2x07 | Airdate: Apr 27, 1976
Episode: 2x08 | Airdate: Oct 4, 1993
Episode: 2x09 | Airdate: Dec 8, 1993
Episode: 3x01 | Airdate: Sep 20, 1975
Episode: 3x02 | Airdate: Oct 18, 1975
Episode: 3x03 | Airdate: Nov 1, 1975
Episode: 3x04 | Airdate: Feb 21, 1976
Episode: 3x05 | Airdate: Mar 27, 1976
Episode: 3x06 | Airdate: May 1, 1976
Episode: 3x07 | Airdate: May 22, 1976
Episode: 3x08 | Airdate: Jul 3, 1976
Episode: 3x09 | Airdate: Jul 10, 1976
Episode: 3x10 | Airdate: Feb 3, 1979
Episode: 3x11 | Airdate: Jan 1, 2002
Episode: 3x12 | Airdate: Jan 1, 2008
Episode: 4x01 | Airdate: Sep 16, 1978
Episode: 4x02 | Airdate: Nov 18, 1978
Episode: 4x03 | Airdate: Jan 13, 1979
Episode: 4x04 | Airdate: Mar 10, 1979
Episode: 4x05 | Airdate: Mar 27, 1979
Episode: 4x06 | Airdate: May 5, 1979
Episode: 4x07 | Airdate: May 19, 1979
Episode: 4x08 | Airdate: Jun 30, 1979
Episode: 4x09 | Airdate: Jul 14, 1979
Episode: 5x01 | Airdate: Jan 1, 1982
Episode: 5x02 | Airdate: Jan 1, 1982
Episode: 5x03 | Airdate: Jan 1, 1983
Episode: 5x04 | Airdate: Jan 1, 1984
Episode: 6x01 | Airdate: Sep 10, 1994
Episode: 6x02 | Airdate: Jun 26, 1995
Episode: 6x03 | Airdate: Jul 13, 1995
Episode: 6x04 | Airdate: Oct 23, 1995
Episode: 6x05 | Airdate: Jan 21, 1996
Episode: 6x06 | Airdate: May 6, 1996
Episode: 6x07 | Airdate: Sep 12, 1996
Episode: 6x08 | Airdate: Nov 22, 1996
Episode: 7x01 | Airdate: Mar 31, 2009
Episode: 7x02 | Airdate: Mar 31, 2009
Episode: 7x03 | Airdate: Mar 31, 2009
Episode: 7x04 | Airdate: Mar 31, 2009
Episode: 7x05 | Airdate: Mar 31, 2009
Episode: 7x06 | Airdate: Mar 31, 2009
Episode: 7x07 | Airdate: Mar 31, 2009
Episode: 7x08 | Airdate: Mar 31, 2009
Episode: 7x09 | Airdate: Mar 31, 2009
Episode: 7x10 | Airdate: Mar 31, 2009
Episode: 7x11 | Airdate: Mar 31, 2009
Episode: 7x12 | Airdate: Mar 31, 2009