The Cursed Cabinet of Professor Madds Markson!

"The Cursed Cabinet of Professor Madds Markson!" is the seventh episode of Scooby-Doo and Guess Who? season one. It aired on August 8, 2019 on Boomerang's SVOD service. It was written by Michael Ryan, produced by series creator, Chris Bailey, and directed by Frank Paur.

Mystery Inc. is invited to spend the night in a haunted hotel for a million dollars in Las Vegas by its reclusive owner. While there, they meet famous TV magicians, Penn & Teller.

Memorable quotes
Fred: Las Vegas, the city that never sleeps. Daphne: That's New York, Freddy! The Big Apple.

Shaggy: Like, I'm pretty sure the only buffet they got here is the All-You-Can-Scream!

Shaggy: Like, man! Why do we always end up at haunted places?! Every single time! Fred: Just lucky, I guess.

Fred: Hold the phone! It's... Mystery Inc.: World-renowned magicians and entertainers, Penn & Teller!

Shaggy: Always a bridesmaid. Scooby: Never a bride.

Tess: And thanks to you meddling kids and magic legends, Penn & Teller, I've got some great footage.

Teller: And I would've gotten away with it, too, and Penn being so hard to fool.

Characters

 * style="background-color:#d2d2ff"| Demolition boss
 * style="background-color:#aaffaa"| Phil LaMarr
 * style="background-color:#d2d2ff"| Demolition worker
 * style="background-color:#aaffaa"| Frank Welker
 * style="background-color:#d2d2ff"| Ghost of Professor Madds Markson
 * style="background-color:#aaffaa"| Phil LaMarr
 * 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:#clear"| Penn Jillette
 * style="background-color:#clear"| Himself
 * style="background-color:#clear"| Teller
 * style="background-color:#clear"| Himself
 * style="background-color:#d2d2ff"| Tess Flemmings
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Hugo Hauser
 * style="background-color:#aaffaa"| Unavailable
 * style="background-color:#d2d2ff"| Professor Madds Markson
 * style="background-color:#aaffaa"| Unavailable
 * style="background-color:#FDB56C" colspan="2"| Harry Houdini
 * style="background-color:#clear"| Teller
 * style="background-color:#clear"| Himself
 * style="background-color:#d2d2ff"| Tess Flemmings
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Hugo Hauser
 * style="background-color:#aaffaa"| Unavailable
 * style="background-color:#d2d2ff"| Professor Madds Markson
 * style="background-color:#aaffaa"| Unavailable
 * style="background-color:#FDB56C" colspan="2"| Harry Houdini
 * style="background-color:#d2d2ff"| Professor Madds Markson
 * style="background-color:#aaffaa"| Unavailable
 * style="background-color:#FDB56C" colspan="2"| Harry Houdini
 * style="background-color:#FDB56C" colspan="2"| Harry Houdini
 * style="background-color:#FDB56C" colspan="2"| Harry Houdini

Organizations

 * Mystery Incorporated

Locations

 * Earth
 * United States
 * Nevada
 * Las Vegas
 * Savannah Hotel
 * Madds Markson Theater
 * Hugo's residence
 * New York (mentioned)
 * The Moon

Vehicles

 * The Mystery Machine

Filming
It was copyrighted in 2018.

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 composed by Steven Morrell.

Release
Dates are in order of release:


 * United States: August 8, 2019 on the Boomerang video subscription on-demand service
 * Canada: October 8, 2019 on Teletoon
 * United Kingdom and Ireland: October 22, 2019 on Boomerang

Behind the scenes

 * With every episode's title card, one of the gang announces the guest star, which is Fred this time.
 * Fred says "Hold the phone" once.
 * Velma says "Jinkies" once.
 * The Savannah has a painting of the Witch Doctor from the Scooby-Doo, Where Are You! episode "Decoy for a Dognapper."
 * Daphne can apparently "speak mime," which is interesting because she did become a mime in the Be Cool, Scooby-Doo! episode "There Wolf."
 * Tess thought Penn & Teller were doing a TV special, which they are known for.
 * Teller signs the million dollar check to "Scooby-Doo & Friends."
 * Welker and Teller aren't credited for the construction worker and Hugo, respectively.

Errors

 * Although Fred calls it the Madds Markson Theater, the sign simply says "Theater."

Home availability

 * In the United States:
 * January 19, 2021: Warner Home Video releases Scooby-Doo! and Guess Who?: The Complete First Season on DVD.
 * In the United Kingdom and Ireland:
 * May 31, 2021: Warner Home Video releases Scooby-Doo! and Guess Who?: The Complete First Season on DVD.