Book · in order
Keeper of the Lost Cities Books in Order
Shannon Messenger's middle-grade fantasy follows Sophie Foster through the elven Lost Cities. Read in publication order, slotting the two half-installments — Unlocked (8.5) and Unraveled (9.5) — into their numbered positions.
Keeper of the Lost Cities Books in Order — complete list
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Why this order?
Keeper of the Lost Cities is rare among long middle-grade series in that its reading order is refreshingly simple: read the books in the order Shannon Messenger published them. The main arc follows Sophie Foster, a human-raised telepath who discovers she belongs to the secret elven world of the Lost Cities, and each volume picks up almost exactly where the last left off. Because the story is so tightly serialized, there is no reordering, no prequel to read first, and no separate timeline to untangle. Start with Keeper of the Lost Cities (2012) and move straight through.
Two installments need a quick word, because both carry decimal numbers rather than whole ones. Unlocked (2020) is labeled book 8.5 and sits between Legacy and Stellarlune. It is a hybrid: roughly half novella and half companion guide, with character files, art, and world details. Despite the "guide" framing, the novella portion contains genuine plot developments that the later books assume you know, so treat it as a required stop, not an optional extra. Unraveled (2024) is book 9.5 and comes after Stellarlune. Told entirely from Keefe Sencen's point of view, it retells his harrowing human-world arc from book 9 and fills in feelings and events the main narration could not reach. Read both in their numbered positions rather than saving them for the end.
The series is ongoing. Unraveled (2024) is the most recently published installment, while Stellarlune (2022) remains the latest full-length numbered novel. Messenger has confirmed a tenth main book, announced as Elysian, is forthcoming; as of early 2026 its release had not been finalized. Beyond Unlocked and Unraveled, there are no other canonical novellas or spin-offs in this world to track.
Readers who enjoy Sophie's world often move on to other modern middle-grade fantasy with hidden-world hooks, such as Rick Riordan's Percy Jackson and the Olympians or Soman Chainani's The School for Good and Evil. Messenger also wrote the YA Sky Fall trilogy, a separate series with an older audience and an unrelated story.
Timeline 2012–2024
Every entry plotted by release year — see the gaps, clusters and revivals at a glance.
Where to play it today
Affiliate links (Bookshop.org for books, store links for games/films) slot in here.
Frequently asked questions
How many Keeper of the Lost Cities books are there?
Through 2024 there are eleven releases: nine numbered main novels plus two half-installments — Unlocked (book 8.5) and Unraveled (book 9.5). The most recent is Unraveled (2024). At least one more main book, Elysian, is forthcoming, so the series is ongoing.
What order should I read Keeper of the Lost Cities in?
Read in publication order: Keeper of the Lost Cities, Exile, Everblaze, Neverseen, Lodestar, Nightfall, Flashback, Legacy, Unlocked (8.5), Stellarlune (9), then Unraveled (9.5). The story is tightly serialized, so this is the intended order.
Do I need to read Unlocked and Unraveled?
Yes to both. Unlocked is marketed partly as a companion guide, but its novella half contains real plot developments the later books rely on; read it in its 8.5 position, between Legacy and Stellarlune. Unraveled (9.5) retells events from Keefe's point of view and comes right after Stellarlune.
Is Keeper of the Lost Cities finished?
No. Unraveled (2024) is the latest published installment, and Stellarlune (2022) is the latest full-length numbered novel. Shannon Messenger has confirmed a further main book in the arc, announced as Elysian (book 10), is on the way, though its release was not finalized as of early 2026.
Is there a prequel or spin-off to read first?
No. There is no prequel or spin-off. Just start with the first book, Keeper of the Lost Cities, and proceed in publication order. The only non-numbered companion volumes are Unlocked (8.5) and Unraveled (9.5), both read in their numbered positions.
What age group is Keeper of the Lost Cities for?
It is middle-grade fantasy, generally aimed at readers roughly 8 to 12, though it has a broad crossover audience. Fans often also enjoy Percy Jackson and The School for Good and Evil.
Last updated · Sources: en.wikipedia.org, Wikidata
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