Dance Matron of Mayhem! (S01E21)

S01E01 Revenge of the Swamp Monster! S01E02 A Mystery Solving Gang Divided! S01E03 Peebles' Pet Shop of Terrible Terrors! S01E04 Elementary, My Dear Shaggy! S01E05 Ollie Ollie In-come Free! S01E06 The Scooby of a Thousand Faces S01E07 The Cursed Cabinet of Professor Madds Markson! S01E08 When Urkel-Bots Go Bad! S01E09 The Fastest Fast Food Fiend! S01E10 Attack of the Weird Al-osaurus! S01E11 Now You Sia, Now You Don't! S01E12 Quit Clowning! S01E13 What a Night for a Dark Knight! S01E14 The Nightmare Ghost of Psychic U! S01E15 The Sword, the Fox, and the Scooby-Doo! S01E16 One Minute Mysteries! S01E17 Hollywood Knights! S01E18 The New York Underground! S01E19 Fear of the Fire Beast! S01E20 Too Many Dummies! S01E21 Dance Matron of Mayhem! S01E22 The Wedding Witch of Wainsly Hall! S01E23 A Run Cycle Through Time! S01E24 I Put a Hex on You! S01E25 The High School Wolfman's Musical Lament! S01E26 Space Station Scooby!