After their face-off with Kimura, Nick finds himself trying to come to grips with the return of his mother, Kelly Burkhardt. A trail of brutal murders unveils a foreign conspiracy to hunt down Nick, leading to several revelations about his past. Meanwhile, Juliette still lies in her mysteriously-induced coma as Rosalee and Monroe work tirelessly to bring her out of it safely. Elsewhere, Hank struggles with the shocking truths he’s recently seen and Captain Renard deals with unexpected family issues when his estranged brother comes back into his life.

Dave welcomes Andy Samberg, gold medal-winning U.S. Olympic decathlete Ashton Eaton and Glen Hansard performs. Top Ten Little-Known Facts About Paul Ryan. Bill Scheft tries to recall numbers of some of the great U.S. track and field Olympic stars. Andy awkwardly tries to describe the Olympics opening ceremony in one word. He won the gold medal at the Olympics, but can Ashton Eaton do comedy? The U.S. decathlete breaks down his gold medal-winning performance at the 2012 Olympics.

The department is still reeling with the recent departure of Deputy Chief Brenda Lee Johnson, creating a tough transition for the newly appointed head of Major Crimes, Captain Sharon Raydor. But there is little time for adjustment as the department rushes to reach a plea bargain when a string of grocery store robberies turns fatal. After proving to be a valuable source for the case, undercover police detective and military veteran Detective Amy Sykes is transferred to Major Crimes. Meanwhile, Raydor takes a big step to protect teenager Rusty Beck after he runs away from his foster family.

Twenty-five shark myths are put to the test for Shark Week 2012.

Mordecai and Rigby hope to impress Margaret and Eileen by taking a picture with Deathbear.

StePhest Colbchella '012 gets underway, Mitt Romney picks Paul Ryan as his running mate, and fun. reviews their history and hygiene.