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E17 - Going Batty: Ralphie is convinced that Ms. Frizzle is a vampire when she shows up in a cape, and with a transylvanian accent. She moves like a vampire and talks like a vampire. The Friz is now taking all the kids' parents on a little field trip and Ralphie is convinced she is going to do something horrible to them.
The Magic School Bus SE01EP08 "In The Haunted House" Carlos is inventing a new instrument for the class concert at the "Sound Museum", but it sounds awful. When the bus breaks down, they miss the rehearsal, giving Carlos more time to perfect his instrument. But to do so, the class must learn HOW SOUND IS MADE.