Reliquary' by Douglas Preston and Lincoln Child is technically a sequel to their debut novel 'Relic,' but honestly, it stands on its own pretty well! The first book introduces the terrifying
Creature in the museum, while 'Reliquary' dives deeper into the underground world of New York, exploring the consequences left behind. I loved how it expanded the lore without feeling like a rehash—new characters, fresh tension, and that signature blend of sci-fi and horror. If you skipped 'Relic,' you might miss some context, but the pacing and mystery in 'Reliquary' are gripping enough to pull you in regardless.
That said, I’d still recommend reading 'Relic' first—it’s like savoring a layered dessert. You get the full flavor of the world-building, and the callback moments hit harder. But if you’re the type who jumps into series mid-way, you won’t feel completely lost. The authors do a solid job balancing continuity with standalone appeal.