Lost in a Good Book

by Jasper Fforde

Wait—I know you've likely read this since it's the first Thursday Next book, but if somehow you haven't, this is essential before continuing further into the series. It establishes the entire literary detective universe and Thursday's character in ways that make Lost in a Good Book even richer on rereading.

by Frank Joseph

Like Fforde, Rainfield plays with the mechanics of how reality works—here, a teenage girl exists but no one can remember her or see her in photos. It has that same blend of high-stakes plotting (there's genuine danger) with moments of dark humor and the protagonist having to navigate a world operating by rules nobody else quite understands. The emotional core is heavier than Fforde, but the puzzle-box logic will feel familiar.

by Edward E. Ericson

Published in 1967, this Soviet novel shares Fforde's gift for weaving multiple timelines and realities together—here, a devil's visit to Soviet Moscow, a retelling of Pontius Pilate's story, and a doomed love affair all spiral into one another. Where Fforde mines English literature for his jokes, Bulgakov mines philosophy and theology, but both authors have that same anarchic energy and refusal to let plot follow conventional rules. Fair warning: it's denser and more philosophical, but the structural playfulness will delight you.

by Diana Wynne Jones

Jones writes with Fforde's sense that the world operates on logic that's internally consistent but utterly bonkers—a young woman is cursed to age rapidly, so she befriends a wizard with a moving castle, and from there the plot spirals into curses, parallel worlds, and a war that may or may not be real. The dialogue crackles with the same kind of witty deflection Thursday uses, and Jones has that rare ability to make genuinely high stakes feel light and funny simultaneously.