April 15, 2011
Episode 1 of Season 4 premiered on April 15, 2011
April 29, 2011
Episode 2 of Season 4 premiered on April 29, 2011
May 13, 2011
Episode 3 of Season 4 premiered on May 13, 2011
May 27, 2011
Episode 4 of Season 4 premiered on May 27, 2011
June 10, 2011
Episode 5 of Season 4 premiered on June 10, 2011
June 24, 2011
Episode 6 of Season 4 premiered on June 24, 2011
July 8, 2011
Episode 7 of Season 4 premiered on July 8, 2011
July 22, 2011
Episode 8 of Season 4 premiered on July 22, 2011
January 13, 2012
Episode 9 of Season 4 premiered on January 13, 2012
January 27, 2012
Episode 10 of Season 4 premiered on January 27, 2012
February 10, 2012
Episode 11 of Season 4 premiered on February 10, 2012
February 24, 2012
Episode 12 of Season 4 premiered on February 24, 2012
March 9, 2012
Episode 13 of Season 4 premiered on March 9, 2012
March 23, 2012
Episode 14 of Season 4 premiered on March 23, 2012
April 6, 2012
Episode 15 of Season 4 premiered on April 6, 2012
April 20, 2012
Episode 16 of Season 4 premiered on April 20, 2012
May 18, 2012
Episode 17 of Season 4 premiered on May 18, 2012
June 29, 2012
Episode 18 of Season 4 premiered on June 29, 2012
July 8, 2012
Episode 19 of Season 4 premiered on July 8, 2012