Dark Side
performed by Glee Cast; features Dalton Academy Warblers, Darren Criss, Grant Gustin, and Nolan Gerard Funk

Dark Shadows is an American-produced gothic soap opera that originally aired weekdays on the ABC television network, from June 27, 1966 to April 2, 1971.

Dark Shadows (often referred to as Dark Shadows: The Revival Series, and also known as The New Dark Shadows) is a 1991 re-imagining of the original 1966–1971 Dark Shadows television series. Both versions were developed by Dan Curtis. It aired weekly during primetime on NBC, and was later shown in reruns on the Sci-Fi Channel and Chiller.

In 1752, the Collins family sails from Liverpool, England to North America. The son, Barnabas, grows up to be a wealthy playboy in Collinsport, Maine and is the master of Collinwood Manor. He breaks the heart of a witch, Angelique Bouchard, who turns him into a vampire and buries him alive. In 1972, Barnabas is accidentally freed from his coffin and returns to find his once-magnificent mansion in ruin. The manor is currently occupied by Barnabas' dysfunctional descendants, all of whom are hiding dark and horrifying secrets.

As a toxic cloud of smog hangs over New York City during Thanksgiving 1966, Betty's bitterness over her weight gain and Megan's youth and beauty leads her to tell Sally about Anna Draper in an attempt to cause turmoil between Sally, Don, and Megan. Don and Peggy are both irritated by Michael Ginsberg's rising star, and Don takes a devious approach to clip the wings of the young copywriter. Roger gets handed a new client (Manischewitz) by Bert Cooper, but Roger's decision that he needs more Jewish input to help him involves estranged wife Jane, with unfortunate results. Pete continues to resent that his brief affair with commuter-acquaintance Howard's wife, Beth, has ended.