David L. Hewitt had previously co-written the screenplay of The Time Travelers and had turned a 33-minute-long Monsters Crash the Pajama Party into part of an interactive stage show.
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The latter two editions topped the cast list (as given on the cover) with Lon Chaney, Jr., who did not appear in this film but did appear in Hewitt's Doctor Terror's Gallery of Horrors with Carradine, Gentry, and McGee.
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