The Horrible Haunted Hospital of Dr. Phineas Phrag!

"The Horrible Haunted Hospital of Dr. Phineas Phrag!" is the third episode of Scooby-Doo and Guess Who? season one, and the twenty-ninth overall. It aired on October 1, 2019 on Boomerang's VSOD service. It was written by Benjamin Townsend, produced by Chris Bailey, and directed by Sean Bishop.

Celebrity guest and monster hunter Kristen Schaal becomes an honorary member of Mystery Inc. when they investigate a haunted hospital by one of its weird doctors.

Memorable quotes
Fred: Hold the phone! It's... Mystery Inc.: Famous actor, writer, comedian, Kristen Schaal!

Big Bob: And I would've gotten away with it, too, if it wasn't for you meddling kids and the comedic stylings of famous actor and comedian, Kristen Schaal.

Characters

 * style="background-color:#d2d2ff"| Dr. Wheeler
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Orderly
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#FDB56C" colspan="2"| Joey
 * style="background-color:#d2d2ff"| Ghost of Dr. Phineas Phrag
 * style="background-color:#ffff00"|
 * style="background-color:#clear"| Fred Jones
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Velma Dinkley
 * style="background-color:#clear"| Kate Micucci
 * style="background-color:#clear"| Daphne Blake
 * style="background-color:#clear"| Grey Griffin
 * style="background-color:#clear"| Scooby-Doo
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Shaggy Rogers
 * style="background-color:#clear"| Matthew Lillard
 * style="background-color:#d2d2ff"| Dr. Phineas Phrag
 * style="background-color:#ffff00"| N/A
 * style="background-color:#d2d2ff"| Kristen Schaal
 * style="background-color:#aaffaa"| Kristen Schaal
 * style="background-color:#d2d2ff"| Hospital administrator
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Monica
 * style="background-color:#ffff00"| N/A
 * style="background-color:#clear"| Big Bob McAllister
 * style="background-color:#clear"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Mrs. McAllister
 * style="background-color:#ffff00"| N/A
 * style="background-color:#d2d2ff"| Kristen Schaal
 * style="background-color:#aaffaa"| Kristen Schaal
 * style="background-color:#d2d2ff"| Hospital administrator
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Monica
 * style="background-color:#ffff00"| N/A
 * style="background-color:#clear"| Big Bob McAllister
 * style="background-color:#clear"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Mrs. McAllister
 * style="background-color:#ffff00"| N/A
 * style="background-color:#clear"| Big Bob McAllister
 * style="background-color:#clear"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Mrs. McAllister
 * style="background-color:#ffff00"| N/A
 * style="background-color:#ffff00"| N/A

Organizations

 * Mystery Incorporated

Locations

 * Eastside Hospital
 * Arizona
 * McAllister residence
 * The Moon

Objects

 * Kristen's lunchy hat
 * Mr. McScoots

Vehicles

 * The Mystery Machine

Development
It was copyrighted in 2019.

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 Peter Bateman and Sunna Wehrmeijer.

Release
Dates are in order of release:


 * United States: October 1, 2020 on the Boomerang video subscription on-demand service
 * United Kingdom & Ireland: October 9, 2020
 * Australia: October 31, 2020 on Boomerang
 * Canada: December 20, 2020 on Teletoon

Behind the scenes

 * With every episode's title card, one of the gang announces the guest star, which is Scooby this time.
 * The flashback disregards keeping in line with the A Pup Named Scooby-Doo continuity.
 * Kristen makes a Sherlock Holmes reference, when she says, "The mystery is afoot."
 * Mystery Inc. met Big Bob in "Attack of the Weird Al-Osaurus!".
 * How many times does Daphne say, "Jeepers"? Four times.

Errors

 * Fred refers to the hospital as Eastside General Hospital, despite the fact the sign only says Eastside Hospital.
 * Kristen Schaal is clearly older than the gang in the present, but the flashback depict her around the same age as them.
 * Shaggy and Scooby react to the monster after opening the door, despite the fact both of them had their eyes closed.
 * Schaal looks the same in her 8th grade photo.