Bibliophage is notable for being one of only two stories in Decalog 5 to be explicitly connected to the Doctor Who universe, in this case retroactively: the main characters Reginald Forthman and Pik Lim later appeared in Marley's short story All the Fun of the Fear, in the 2013 Faction Paradox anthology Burning with Optimism's Flames.
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- Each story in Decalog 5: Wonders centres around a "wonder of the universe". The wonder in this story is the Library of Everything.
- Reginald Forthman and Pik Lim are marooned in the Library of Everything. (PROSE: All the Fun of the Fear)