Poseidon's Warriors (Alyssa Day) Books in Order
Part ofAlyssa Day Books in OrderBrowse Poseidon's Warriors by Alyssa Day in order, with short summaries, Atlantis background, and help choosing the best place to start.
Last updated: July 6, 2026
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Poseidon's Warriors (Alyssa Day) books in publication order
6 books
April in Atlantis
by Alyssa Day
2018
April is Poseidon's first female warrior, and she has no patience for the handsome wolf prince who immediately wants her. But a deadly feud, a long-lost twin, and a growing attraction make walking away impossible.
February in Atlantis
by Alyssa Day
2018
Jake has spent years hiding his turmoil behind an easygoing surfer act, but that mask slips fast on his latest mission. When he meets newly changed falcon shifter Savannah in the middle of a deadly standoff, love and danger arrive together.
January in Atlantis
by Alyssa Day
2018
Flynn comes back to Atlantis after years away and is immediately drafted into Poseidon's new warrior force. His first mission throws him together with Eva, a woman on the run who may be vital to saving kidnapped girls.
March in Atlantis
by Alyssa Day
2018
This follow-up resolves Jake and Savannah's crisis while opening a second romance for warrior Lucas. With a child in danger and trust hard to come by, Atlantis faces another fast-moving battle with a lot at stake.
June In Atlantis
by Alyssa Day
2019
Playboy warrior Rafe expects flirtation, not real trouble, when he meets Interpol inspector Saoirse O'Sullivan. Demons, dragons, and Atlantean politics quickly turn their instant attraction into another dangerous mission.
May in Atlantis
by Alyssa Day
2019
Gabriel, a poet turned warrior, has every reason to hate the Fae. But when Fae princess Erielle needs help rescuing her brother from the demon dimension, hatred has to make room for a risky alliance.
Poseidon's Warriors (Alyssa Day) books in chronological order

January in Atlantis
by Alyssa Day
2018Poseidon's Warriors, Book 1
February in Atlantis
by Alyssa Day
2018Poseidon's Warriors, Book 2
March in Atlantis
by Alyssa Day
2018Poseidon's Warriors, Book 3
April in Atlantis
by Alyssa Day
2018Poseidon's Warriors, Book 4
May in Atlantis
by Alyssa Day
2019Poseidon's Warriors, Book 5
June In Atlantis
by Alyssa Day
2019Poseidon's Warriors, Book 6
Series background & context
Poseidon's Warriors is Alyssa Day's follow-up to the original Warriors of Poseidon books. The world is the same, but the focus shifts to a newer generation of Atlantean defenders, rougher around the edges, still figuring themselves out, and very much not prepared for how often love is going to complicate their assignments.
The setup is simple and fun. Atlantis needs more protectors, so Poseidon marks new warriors to serve. Denal helps shape this new team, while Queen Riley adds a little matchmaking energy of her own. That means the series balances military-style missions with romantic chaos, which is a pretty good summary of Alyssa Day at her most playful.
The books in this branch of the world are shorter and faster than the original novels. Holiday stories like Halloween in Atlantis and Christmas in Atlantis ease readers into the tone, and then the monthly Year in Atlantis novellas start rolling out. January in Atlantis follows Flynn and Eva, February in Atlantis and March in Atlantis center Jake and Savannah while expanding the broader conflict, April in Atlantis turns to April and Pine, May in Atlantis pairs Gabriel with Erielle, and June in Atlantis brings Rafe together with Saoirse. Each story has its own romantic payoff, but the same larger world keeps connecting them.
That shared world is the point.
These books move between Atlantis and the world above, with missions involving demon dimensions, wolf shifter politics, human supremacist groups, kidnappings, magical artifacts, and supernatural law enforcement. The cast keeps crossing paths, so even when a novella spotlights one couple, there is still a sense of team, court, and ongoing magical trouble in the background. Familiar faces from the earlier Atlantis books also help the series feel rooted rather than completely separate.
The tone is lighter and more openly romantic than the main Warriors of Poseidon sequence, but there is still action. These are quick reads with banter, fast attraction, dangerous assignments, and a lot of movement. If you already like the Atlantis world, they are an easy next step. If you are new, they make more sense after the original series, because so much of the emotional payoff comes from already understanding the kingdom, its history, and the people who run it.
In short, Poseidon's Warriors is the brisker, more novella-driven side of Atlantis. Same magic. Same ocean-born mythology. More new recruits, more matchmaking, and a lot of trouble packed into a small space.
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