September 24, 2008 • 1h
Episode 1 of Season 22 premiered on September 24, 2008
October 18, 2008 • 1h
The 1976 disappearance of Jean Zapata, a wife and mother in Madison, Wis., is investigated.
October 25, 2008 • 1h
Episode 3 of Season 22 premiered on October 25, 2008
November 1, 2008 • 1h
Episode 4 of Season 22 premiered on November 1, 2008
November 8, 2008 • 1h
Episode 5 of Season 22 premiered on November 8, 2008
November 15, 2008 • 1h
Episode 6 of Season 22 premiered on November 15, 2008
November 22, 2008 • 1h
Episode 7 of Season 22 premiered on November 22, 2008
November 29, 2009 • 1h
Episode 8 of Season 22 premiered on November 29, 2009
December 6, 2008 • 1h
Episode 9 of Season 22 premiered on December 6, 2008
December 13, 2008 • 1h
Episode 10 of Season 22 premiered on December 13, 2008
December 20, 2008 • 1h
Episode 11 of Season 22 premiered on December 20, 2008
January 10, 2009 • 1h
Episode 12 of Season 22 premiered on January 10, 2009
January 17, 2008 • 1h
Episode 13 of Season 22 premiered on January 17, 2008
January 24, 2009 • 1h
Episode 14 of Season 22 premiered on January 24, 2009
January 31, 2009 • 1h
Episode 15 of Season 22 premiered on January 31, 2009
February 7, 2009 • 1h
Episode 16 of Season 22 premiered on February 7, 2009
March 7, 2009 • 1h
Episode 17 of Season 22 premiered on March 7, 2009
March 14, 2009 • 1h
The 2000 poisoning death of Eric Miller, a pediatric AIDS researcher in Raleigh, is investigated.
March 28, 2009 • 1h
Episode 19 of Season 22 premiered on March 28, 2009
April 11, 2009 • 1h
Episode 20 of Season 22 premiered on April 11, 2009
April 25, 2009 • 1h
Episode 21 of Season 22 premiered on April 25, 2009
May 2, 2009 • 1h
Episode 22 of Season 22 premiered on May 2, 2009
May 9, 2009 • 1h
Episode 23 of Season 22 premiered on May 9, 2009
May 16, 2009 • 1h
Episode 24 of Season 22 premiered on May 16, 2009
June 2, 2009 • 1h
Episode 25 of Season 22 premiered on June 2, 2009
June 13, 2009 • 1h
Episode 26 of Season 22 premiered on June 13, 2009