The Poisoned King Review: Katherine Rundell’s Archipelago Adventure

A return with two urgent quests

Katherine Rundell’s The Poisoned King, the second book in Impossible Creatures, sends Christopher back to the Archipelago after a tiny dragon wakes him. His return brings a threat that reaches beyond one creature: dragons are mysteriously dying, with potentially grave consequences for the magical islands. Princess Anya faces a separate danger at the same time. Her grandfather, the king, has been murdered, and her father stands accused. The children’s quests converge as they confront the risks ahead.

That pairing gives the adventure two clear sources of momentum. Christopher’s concern is the dragons and what their deaths might mean for the Archipelago; Anya’s is the peril surrounding her family. The review offers no further explanation of the mystery, and readers are better served discovering those details in the book. What it does establish is a story built around parallel stakes that eventually draw its leads into the same unfolding adventure.

A brisk read with room to imagine

Reviewer Michelle in the Middle praises the storytelling, short chapters and occasional line drawings. Together, those choices make the book feel inviting to readers who like an adventure that keeps moving. Short chapters can give younger readers satisfying places to pause, while the illustrations offer visual accents without taking the place of the world the prose creates. The review’s enthusiasm rests on the combined effect: a magical setting, a brisk pace and enough danger to keep the journey in motion.

The Archipelago is a central part of that appeal. Its magical creatures and inhabitants can be endearing or villainous, depending on their place in the story. That shifting range gives the setting more texture than a simple catalogue of wonders: the creatures can delight, unsettle or complicate the characters’ plans. Michelle describes the result as an escape from reality and calls the book a grand adventure from start to finish.

For readers continuing the series

Readers who enjoyed the first Impossible Creatures book are the clearest audience. The review says they won’t be disappointed, while also presenting the story as broadly appealing. Its paired quests, magical inhabitants and quick chapter breaks offer several ways into the adventure, making it a natural pick for middle school readers and for adults choosing a fantasy to share with younger readers. The buying advisory marks it “EL, MS - ESSENTIAL,” and the appeal rating is “MANY.”

The ending appears to provide a satisfying resolution to one story while leaving a new twist that points toward a third book. That gives returning readers both a sense of completion and a reason to anticipate what comes next. The review doesn’t disclose the twist, so newcomers can approach the book without having its later turns laid out for them. It also signals that this installment contributes to a continuing series rather than closing the door on the Archipelago.

Publication details

The Poisoned King is listed at 294 pages and published by Random House in 2025. The source gives its price as $12 and its language and mature-content ratings as G, with zero swears; its violence rating is also G. Those details, alongside the middle school buying advisory, make the book’s intended readership easier to assess before choosing it for a young reader.

Michelle in the Middle’s recommendation is especially strong for readers already invested in Christopher’s world, but the review also points to the ingredients that can make the book work as a lively fantasy read: short chapters, occasional drawings, magical creatures and two quests that meet under pressure. For anyone ready to return to the Archipelago, the dying dragons and Anya’s family crisis set up a new adventure, while that final twist leaves the series with somewhere to go next.