Now You Sia, Now You Don't!

"Now You Sia, Now You Don't!" is the eleventh episode of Scooby-Doo and Guess Who? season one. It aired on September 5, 2019 on Boomerang's VSOD service. It was written by Caroline Farah, produced by Chris Bailey, and directed by Mike Milo.

When celebrity guest star Sia is accused of diamond robbery acted out by a ghostly doppleganger, the gang set out to clear her name.

Memorable quotes
Fred: Wow, Daphne, you didn't tell us your friend is... Fred, Shaggy, Velma, and Scooby: Singer-songwriter-producer-screenwriter-film director Sia!

Sia's trainer: And I would have gotten away with it, too, if it wasn't for you meddling kids. And famous singer-songwriter Sia.

Characters

 * style="background-color:#d2d2ff"| Jewelry store owner
 * style="background-color:#aaffaa"| Frank Welker
 * style="background-color:#d2d2ff"| Sia's doppleganger
 * style="background-color:#aaffaa"| Unavailable
 * style="background-color:#clear"| Fred Jones
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Daphne Blake
 * style="background-color:#clear"| Grey Griffin
 * style="background-color:#clear"| Shaggy Rogers
 * style="background-color:#clear"| Matthew Lillard
 * style="background-color:#clear"| Scooby-Doo
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Velma Dinkley
 * style="background-color:#clear"| Kate Micucci
 * style="background-color:#d2d2ff"| Sia
 * style="background-color:#aaffaa"| Herself
 * style="background-color:#d2d2ff"| Businesswoman
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Sia's trainer
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Sia's housekeeper
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Sia's manager
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Guard
 * style="background-color:#aaffaa"| Matthew Lillard
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Sia's trainer
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Sia's housekeeper
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Sia's manager
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Guard
 * style="background-color:#aaffaa"| Matthew Lillard
 * style="background-color:#aaffaa"| Kari Wahlgren
 * style="background-color:#d2d2ff"| Guard
 * style="background-color:#aaffaa"| Matthew Lillard
 * style="background-color:#aaffaa"| Matthew Lillard

Organizations

 * Mystery Incorporated

Locations

 * United States
 * California
 * Riverside City
 * Palm Springs
 * Jewelery store
 * Sia's residence
 * Party room
 * Recording studio
 * Sparkle House
 * Australia (mentioned)
 * Sweden
 * Rome (mentioned)
 * The Moon

Objects

 * Bouncy balls

Vehicles

 * The Mystery Machine

Music
The theme song, entitled "Scooby-Doo, Where Are You?", was written by Chris Bailey, and performed by David Poe. It was produced by Vivek Maddala. The episode's main music was performed by Steven Morrell.

Release
The episode had its American premiere via the Boomerang video subscription on-demand service on September 5, 2019, followed in the United Kingdom & Ireland on the Boomerang TV channel on October 1, 2019, and then Teletoon provided its Canadian premiere on October 13, 2019.

Behind the scenes

 * The episode title is a play on "Now you see her, now you don't." You're welcome.
 * With every episode's title card, one of the gang announces the guest star, which is Daphne this time.
 * How many times does Fred say "Hold the phone"? Once.
 * How many times does Daphne say "Jeepers"? Once.
 * How many times does Shaggy say "Zoinks"? Twice.

Errors

 * When the pajama-wearing gang is in the recording studio, Shaggy and Velma are wearing their regular clothes when Velma says to Sia about how it's only a matter of time before the ghost comes to get Sia's new diamonds.