The only two-part episode based on a Tales to Give You Goosebumps short story. All other short stories were adapted into single episodes, while the other two-part episodes were based on novels (the three-part episode was original). It originally was meant to be one episode long, but the producers realized its concept was suspenseful enough to be extended so more scenes were shot.
This episode is based on on the seventh story in the Goosebumps book 'Even More Tales to Give You Goosebumps'.
C. J. is reading Giant Robot #7 (1996).