Spiderwick: The Iron Secret (2026)

Starring: Freddie Highmore, Sarah Bolger, Jenna Ortega, David Strathairn

The Field Guide was just the beginning. In Spiderwick: The Iron Secret, the Grace siblings are back, nearly two decades after their first glimpse into the “Unseen World.” Jared and Simon (Freddie Highmore) now lead double lives — one foot in the mundane world of high-tech research, and the other as the secret guardians of the faerie realm. But the creatures they once knew are no longer the only threat they face.

Freddie Highmore returns in his dual role, bringing a mature, complex edge to the twins — one a tactical scholar, and the other a restless adventurer, both burdened with a new generation’s responsibility. Sarah Bolger returns as Mallory, now a master of ancient fencing and modern survival, blending tactical gear with enchanted elven silk. She’s stronger than ever, a fierce protector of her family and the realms that are under threat.

Their world is shaken when Jenna Ortega enters the scene as a young field guide specialist, who uncovers a sinister plot by a global tech conglomerate aiming to harvest “Glamour” — the magic that fuels the faerie realm — as a source of infinite energy. This new technology threatens to tear the veil between worlds forever, risking not only the faeries’ existence but humanity’s as well.

As the Spiderwick Estate becomes the epicenter of a neon-lit supernatural war, the Grace siblings must step up in ways they never imagined. They have to blend ancient magic with modern tech—from drones to iron-infused gadgets—to battle an industrial apocalypse. The stakes have never been higher, and the creatures of the Unseen World are deadlier than before.

It’s a visually breathtaking journey that will test the siblings’ strength, loyalty, and courage. With cutting-edge technology meeting ancient faerie magic, this is a race against time to stop a global catastrophe before the boundaries between the worlds crumble. The secret is out, and the war for the future of both realms is just beginning.

Get ready for a high-stakes, action-packed adventure where the magic is sharper, the creatures are more dangerous, and the Graces are once again at the center of a battle for survival.