The Gang finds Shaggy has raided the fridge at the abandoned Malt Shop.
To their horror, the CREEPER looms over him ready to strike.
“Rook out!”- Scooby

The Gang finds Shaggy has raided the fridge at the abandoned Malt Shop.
To their horror, the CREEPER looms over him ready to strike.
“Rook out!”- Scooby
“Don’t worry, Scoob, turns out the Creeper is having a pretty rough night.” -Shaggy
“I’m over it” - The Creeper.
On a second look it turns out Shaggy and the Creeper are sharing a Milkshake and their eyes are both incredibly bloodshot.
“Jeepers, then what are you doing here?” - Daphne
“Of course, I came to cause mayhem and find the treasure but there was so much math involved with the puzzle, I was like dude, I’m good. All I know is that THREE times I tried to get into that dumb museum thingy and THREE times they were like, you’re a Frankenstein rip off, and THREE times I was like it’s “Frankenstein’s Monster” technically, and also no I’m not. Kind of lost interest after that… But wait a minute- maybe I should show you!”
The Creeper smashes out of the booth at the Malt shop, drains the last of the milk shake, and scoops up Velma under one arm.
“Maybe I will solve the mystery after all, now that I’ve got your best brain, we’ll see if she can’t figure out the mystery for me! HAHAHAH See ya, dum-dums” - The Creeper

Jeez, time to follow the clues of what the Creeper said, find the next clue!