2004 | 3 Episodes

Season 2004 of CNN Special Investigations Unit premiered on February 22, 2004.

2005 | 1 Episodes

Season 2005 of CNN Special Investigations Unit premiered on April 10, 2005.

2006 | 10 Episodes

Season 2006 of CNN Special Investigations Unit premiered on January 7, 2006.

2007 | 30 Episodes

Season 2007 of CNN Special Investigations Unit premiered on January 20, 2007.

2008 | 7 Episodes

Season 2008 of CNN Special Investigations Unit premiered on March 15, 2008.

2009 | 1 Episodes

Season 2009 of CNN Special Investigations Unit premiered on May 9, 2009.

2010 | 1 Episodes

Season 2010 of CNN Special Investigations Unit premiered on April 17, 2010.