If you loved watching Cassandra Leung navigate Santa Elena’s ruthless crew and train a Reckoner for people she wasn’t sure she could trust, you’ll be hooked by the shifting loyalties between Zan and Jayd aboard living world-ships in The Stars Are Legion. The bio-organic vessels feel as wild and unknowable as Cas’s Reckoner, and the women at the center make brutal, pragmatic calls—much like Cas weighing survival against her principles—while clawing for power in a place where every alliance has teeth.

Cas and Swift’s wary partnership—barbs, duty, and undeniable pull—finds a tender echo in The Weight of the Stars. After you watched their guard-drop moments between training sessions and raids, you’ll appreciate Ryann and Alexandria’s cautious orbit around each other as they chase an impossible space-transmission. It’s quieter than pirate decks and Reckoner hunts, but that same mix of hard edges softening into trust—and risking your heart while the world presses in—shines through.

If Santa Elena’s command and the knife-edged competence of Swift grabbed you, Seafire delivers a whole ship of women who fight like hell for each other. Captain Caledonia’s crew hits the same adrenaline notes as Cas’s boarding scenes, and the book revels in resourceful tactics and sisterhood on the water. You’ll get that thrill of storm-lashed chases and hard-won victories, led by women who refuse to yield.

Missing the claustrophobic intensity of Cas locked into a fraught mentorship—answering to Santa Elena while relying on Swift—try the relentless push-pull between Gyre and her handler, Em, in The Luminous Dead. With only comms, biotech, and trust issues between them, every decision echoes the way Cas had to gamble on guidance she wasn’t sure she should follow. It’s intimate, dangerous, and saturated with tension.

Watching Cas grow—from dutiful trainer to someone who questions her orders and chooses her own path—pairs beautifully with Nix’s journey in The Girl from Everywhere. A ship, a complicated captain, and impossible choices tie them together: as Nix navigates time-traveling maps and conflicting loyalties on her father’s crew, she faces the same heart-deep reckoning Cas does when she decides who she is beyond the role she was raised for.