Frank welcomes "Mystery Science Theater 3000" writer-performer Frank Conniff, horror host Rich "Svengoolie" Koz and filmmaker Jeffrey Schwarz ("Spine Tingler! The William Castle Story") for a loving look back at the B-movies of legendary producer, director and showman William Castle ("13 Ghosts," "Mr. Sardonicus," "House on Haunted Hill"), his innovative promotional gimmicks (Emergo, Percepto, Illusion-O) and his lasting contributions to the horror genre. Also in this episode, John Waters  introduces "Odorama," Jeffrey hangs with Grandpa Munster, Frank gets spooked by an "Adventures of Superman" episode and Rich attempts to explain the plot of "The Tingler." PLUS: "Rosemary's Baby"! "Carnival of Souls"! The wrath of Joan Crawford! Castle inspires Hitchcock! Hitchcock inspires Castle! And the first acid trip in cinema history!

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