Leonard keeps an affair a secret from Sheldon, Howard and Raj.

(Originally Aired: Thursday Oct 28, 2010)

An article that Henry wrote about him embarrasses Ed; Bonnie and Vince make friends with an ”it” couple.

(Originally Aired: Thursday Oct 28, 2010)

When a college student dies at a dinosaur show, the CSIs must determine if it was murder or an accident.

(Originally Aired: Thursday Oct 28, 2010)

The case of a murder and missing person on a secure compound perplexes the CBI team.

(Originally Aired: Thursday Oct 28, 2010)

Linus waits in the pumpkin patch for the elusive Halloween symbol to appear; a bonus cartoon, ”You’re Not Elected, Charlie Brown,” features Linus in a run for class president.

A documentary crew visits the hospital six months after the shooting to document the road to recovery for doctors and patients; Meredith helps Cristina put on a brave face for the cameras.

(Originally Aired: Thursday Oct 28, 2010)

Sam and Addison disagree over the treatment of a comatose patient who becomes pregnant; Charlotte and Pete face an ethical dilemma when a patient with HIV is in a serious car accident.

(Originally Aired: Thursday Oct 28, 2010)

To celebrate his favorite holiday, the green ogre invites his friends to spend Halloween night in Lord Farquaad’s haunted castle telling scary stories.

Greendale students, including Pierce, ingest a biohazard at a Halloween party that turns them into zombies; the gang must save themselves and the school when they are locked in with the infected students.

(Originally Aired: Thursday Oct 28, 2010)

Michael freaks out when Darryl goes over his head and takes an idea to corporate; a Halloween costume contest puts the office in a competitive mood.

(Originally Aired: Thursday Oct 28, 2010)

Todd attempts to explain Halloween to his co-workers; Tonya makes a pass at Todd during a costume party.

(Originally Aired: Thursday Oct 28, 2010)

Each team produces a backer’s audition for potential investors for a new musical; actress Kristin Chenoweth helps judge their presentations.

(Originally Aired: Thursday Oct 28, 2010)

Stefan and Damon decide on a new plan to deal with Katherine at the Lockwood’s masquerade ball.

(Originally Aired: Thursday Oct 28, 2010)

Alex informs Nikita that one of the recruits has been activated to carry out a suicide mission.

(Originally Aired: Thursday Oct 28, 2010)

The women take a private jet to get VIP treatment and sit court-side at a Kings game.

(Originally Aired: Thursday Oct 14, 2010)

Adrienne has a shoot in Las Vegas; Kyle accuses Kim of having no life outside her children.

(Originally Aired: Thursday Oct 21, 2010)

Adrienne invites the ladies to a Jay-Z concert at her casino; Camille and Kyle butt heads.

(Originally Aired: Thursday Oct 28, 2010)

Homemade taffy, brittles and jellies.

(Originally Aired: Sunday Oct 26, 2003)

Alton Brown puts the ”trick” into classic Halloween candies with these three twists.

(Originally Aired: Thursday Oct 28, 2010)

Chef Paul Miranda enters kitchen stadium for the first time to challenge Iron Chef Cat Cora to a culinary showdown.

(Originally Aired: Sunday Oct 24, 2010)

Crab cakes at Faidley’s and Gertrudes in Maryland; red velvet cupcakes in NYC at Ladybird or Cupcake Stop.

(Originally Aired: Thursday Oct 28, 2010)

Smoked dripping meat sandwich in Brooklyn, NY; pork link topped with bacon, a fried egg and maple mayo; bargain burgers in Kansas City.

(Originally Aired: Friday Sep 24, 2010)

Surveillance footage may solve a crime.

(Originally Aired: Thursday Aug 05, 2010)

A man is brutally beaten to death under an interstate.

(Originally Aired: Thursday Oct 28, 2010)

Update to the shooting death of a 9-year-old.

(Originally Aired: Thursday Oct 28, 2010)

Vampire hunting kit; meteorite; Nazi handbook.

(Originally Aired: Tuesday Oct 26, 2010)

A sword and uniform from a secret society; a 1637 prayer book; Love Meter game.

(Originally Aired: Tuesday Oct 26, 2010)

The team checks into the Lizzie Borden Bed and Breakfast, scene to an infamous crime; Stone’s Public House is rumored to be haunted by the original owner and a little girl.

(Originally Aired: Thursday Oct 28, 2010)

(Originally Aired: Thursday Oct 21, 2010)

(Originally Aired: Thursday Oct 28, 2010)

(Originally Aired: Thursday Oct 28, 2010)

(Originally Aired: Thursday Oct 28, 2010)

Charlie’s girlfriend is embarrassed to be seen with him; Jake sneaks out to go to a concert.

(Originally Aired: Monday Oct 29, 2007)

Charlie and Alan butt heads over Alan’s place in the house, prompting Alan and Jake to move in with Evelyn.

(Originally Aired: Monday Nov 05, 2007)

Charlie finds success as a children’s singing star, which makes Alan miserable.

(Originally Aired: Monday Nov 12, 2007)

Charlie tries to resist an attraction to his soon-to-be stepsister (Jenny McCarthy).

(Originally Aired: Monday Nov 19, 2007)

The gang gets a real scare after Dee reveals she’s pregnant, forcing the guys to recall their last hazy Halloween party to determine who the father is.

(Originally Aired: Thursday Oct 28, 2010)

Kevin convinces everyone to come to the suburbs for Halloween; Ruxin cracks under the pressure of his matchup with Pete; Taco steals a monkey.

(Originally Aired: Thursday Oct 28, 2010)

Mike gets everyone kicked out of a club, the car towed, nearly burns down the house and fails as wingman.

(Originally Aired: Thursday Oct 14, 2010)

Pauly and Vin have a final date with their Miami ladies; Sam and Ron’s supper devolves; Jenni stirs things up between Pauly and Mike.

(Originally Aired: Thursday Oct 21, 2010)

The cast members reminisce about the season.

(Originally Aired: Thursday Oct 28, 2010)