Tim Curry credited as playing...
Mastermind
- Mastermind: [appears behind Scooby-Doo] Ah, the infamous Scooby-Doo. Allow me to introduce myself. I am... the Mastermind!
- [the thunder rumbles]
- Mastermind: I'm the reason you're here.
- Scooby-Doo: You are?
- Mastermind: I'm the one who made Professor Graham disappear.
- Scooby-Doo: You did?
- Mastermind: I'm also the one who's brought back all of your old foes.
- Scooby-Doo: Rut why?
- Mastermind: That's a mystery you will never solve. And one more thing: I'm the one who's kidnapped all your friends!
- Scooby-Doo: Velma!
- Velma: [in a suspended cage] Scooby-Doo!
- Mastermind: See if you can get past this fiendish fright. You remember the Black Knight!
- [evilly laughs and vanishes]
- Scooby-Doo: Velma! He risappeared!
- Velma: We'll worry about that later, Scooby! Watch out, it's the Black Knight!
- Scooby-Doo: Oh, no!
- Black Knight: [laughing evilly] Ha ha ha ha ha ha ha ha ha ha!
- Scooby-Doo: Reddy!
- Fred: See if you can get me down, Scoob!
- [Scooby-Doo pushes down the lever, setting Fred free]
- Fred: Thanks, Scooby. I think the Mastermind's behind this mystery. Have you seen the others?
- Scooby-Doo: Reah, rut I lost them.
- Fred: Maybe if we look around, we can find some clues that will lead us right to him and to the Professor.
- [the Mastermind suddenly placed an empty barrel over Fred]
- Fred: Hey!
- Mastermind: I've had a bellyful of your meddling! It's high past time I did away with you once and for all! I think you'll remember this old adversary of yours, he certainly remembers you.
- Redbeard's Ghost: Aarrrr!
- Fred: Scooby, what's happening?
- Scooby-Doo: Rit's the Ghost of Redbeard!
- Redbeard's Ghost: Aarrrr! Shiver me timbers!
- [laughs heartily]
- Mastermind: I think your old foe has a score to settle with you.
- [vanishes once more]
- Scooby-Doo: Daphne!
- Daphne Blake: [being carried by the Mastermind who is running off] Scooby, help!
- [Scooby rolls like a bowling ball and strikes the Mastermind, who drops Daphne and Daphne lands on Scooby-Doo]
- Daphne Blake: Yee-haw!
- Mastermind: Hey!
- Daphne Blake: Keep it up, Scooby! I'm almost there. Got it! Jeepers, my skin was beginning to chafe.
- Mastermind: Hey! You won't get away that easily.
- Scooby-Doo: You think that was easy?
- [laugh track]
- Mastermind: This will teach you to cross paths with me. Here, I think this old friend of yours is dying to see you.
- [summons the Green Ghost before Scooby-Doo and Daphne from a greenish cloud]
- Scooby-Doo: Rikes!
- Daphne Blake: Scooby, I can't believe it! It's the Green Ghost!
- Mastermind: That's right! And pretty soon you won't stand a ghost of a chance!
- [laughs evilly and vanishes completely]
- Mastermind: Ah, yes! Soon it will all be mine. My brilliant plan is working perfectly! All that remains is...
- [realizes Scooby-Doo behind him]
- Mastermind: What? Impossible! How did you, a worthless cur, make it this far?
- Scooby-Doo: I don't know.
- Mastermind: Well, your luck ends here as well as all nine of your lives.
- Scooby-Doo: Well, I think that's cats, but I'm not a cat.
- Mastermind: Shut up!
- [slams his fist on a button]
- Fred: Look, gang! There he is!
- Mastermind: [being dropped out of the vacuum tube] Whoa!
- Fred: Come on, gang. Let's see who the Mastermind really is.
- Shaggy: Wait, Fred. Like, I know who this guy really is: It's that spooky groundskeeper! Right?
- Groundskeeper: [shows up] Oh, yeah, that's right. Blame the spooky groundskeeper. It's always the spooky groundskeeper. What do you people have against groundskeepers? Some detectives! Why didn't you just say the butler does it? But no, it's always got to be the groundskeeper done it. Anytime ghosts scare somebody off a well-kept lawn, it's just got to be the groundskeeper, like we couldn't just put up a sign that says "Keep off the grass". Yeah, I'll just get myself a big, old rubber monster suit!
- Fred: [clears his throat] As I was saying, let's see who the Mastermind really is.
- [removes the Mastermind's mask, exposing Professor Alexander Graham physically]
- Fred, Shaggy, Daphne Blake: [in unison] It's Professor Alexander Graham!
- Professor Alexander Graham: Oh, me? Heh, heh. Oh, my.
- Holly Graham: Uncle Alexander? I don't believe it!