The Secret of Grayskull

 is the 104th episode of He-Man and the Masters of the Universe.

(Ink & Paint DVD booklet summary: Skeletor sends the fiery-spider fireworks towards the Royal Palace, and while the Heroic Warriors deal with this threat, Orko receives scolding from Man-At-Arms causing the little Trollan to leave. Skeletor witnesses Orko's unhappiness and attempts to rid Eternia of his presence forever by disguising himself as a genie and telling him that everyone, including Orko himself, would be better off if he were to return to Trolla. Orko's decision is a tough one, but even after it is made he soon finds himself aiding Skeletor in an attack on Castle Grayskull!)

Moral
Man-At-Arms: "Sometimes, when your parents punish you, you may think they don't love you. Well, that isn't true. They don't punish to be mean, but to teach you. They hope you'll remember the punishment and not do wrong in the future. If I didn't love Orko, I wouldn't care what he did." Orko: "I'm glad Man-At-Arms cares enough to correct me when I do wrong. How else am I going to learn? I know he loves me, even if he doesn't say it all the time." Man-At-Arms: "Ahem... yes, well, it's time to go." Orko: "Bye."

Heroic Warriors

 * Prince Adam
 * Battle Cat
 * Cringer
 * He-Man
 * Man-At-Arms
 * Orko
 * King Randor
 * Sorceress
 * Teela
 * Zoar

Evil Warriors

 * Clawful (final Filmation appearance)
 * Kobra Khan
 * Skeletor
 * Trap Jaw

Cast

 * John Erwin as He-Man/Prince Adam
 * Alan Oppenheimer as Skeletor, Man-At-Arms and Battle Cat/Cringer
 * Linda Gary as Teela and the Sorceress
 * Lou Scheimer (credited as Erik Gunden) as Orko, Trap Jaw, Kobra Khan, Clawful and King Randor

Behind the Scenes

 * Script was approved June 8, 1984 and final script revision took place January 28,1985.

Continuity

 * The footage of Orko's egg trick seen as part of a flashback is originally from Diamond Ray of Disappearance.
 * The footage of Orko's arrival on Eternia to save young Adam and Cringer in the Tar Swamp is originally from Creatures from the Tar Swamp.
 * Skeletor's disguise as a genie was designed by Fred Carrrillo.

Errors

 * When the Sorceress uses the power of Grayskull to bring one of the castle's statues to life, her headdress is colored orange by mistake during one shot.

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