A group of mercenaries on an unsanctioned mission survives a plane crash in whiteout conditions in the Tian Shan mountains. The men are accustomed to danger. Now they’re growing accustomed to fear.

Team leader Liev and his band of survivors are stranded in the bitter winds with little hope of rescue—or outlasting the wolves that have scented blood. In the distance is the apparent sanctuary of an abandoned stone fortress. That an ancient bulwark even exists on this forsaken summit is beyond comprehension. So is what lies on the other side of its walls.

From Academy Award–winning filmmaker Guillermo del Toro comes Falling Down, chapter one of The Boy in the Iron Box, a blood-chilling serialized novel about an ancient secret that was never meant to be unleashed, featuring exclusive interior artwork. Each chapter can be read or listened to in one breathless sitting.

On an isolated mountain, a stone labyrinth provides rough shelter for a band of mercenaries. At its core lies a centuries-old mystery. But in chapter two of The Boy in the Iron Box, no secret is safe.

A concealed pit; an iron box, wrapped in chains; a statue of a boy. What unknowns await the anxious, disoriented team in this strange ruin? Night will tell.

From Academy Award–winning filmmaker Guillermo del Toro comes The Pit and the Box, chapter two of The Boy in the Iron Box, a blood-chilling serialized novel about an ancient secret that was never meant to be unleashed, featuring exclusive interior artwork. Each chapter can be read or listened to in one breathless sitting.

Their radio is sabotaged. The wolves are gathering outside. And for the increasingly desperate mercenaries, the worst is yet to come in chapter three of The Boy in the Iron Box: the box is empty.

In the wake of an inexplicable disappearance, Liev and his men use their tactical skills to last the night—by going hunting. Following a small, bare footprint in the snow leads only to the realization that someone, or something, is hunting them.

From Academy Award–winning filmmaker Guillermo del Toro comes The Hunted, chapter three of The Boy in the Iron Box, a blood-chilling serialized novel about an ancient secret that was never meant to be unleashed, featuring exclusive interior artwork. Each chapter can be read or listened to in one breathless sitting.

What has been awakened is unbound. The Boy is getting his first taste of freedom. As their comrades fall, fear threatens to consume the survivors in chapter four of The Boy in the Iron Box.

Liev’s plan: get his men out of this ancient stone prison, take their chances with the wolves, and descend the summit at first light. But in this snowbound hell, there’s soon to be a frightening new twist to survival.

From Academy Award–winning filmmaker Guillermo del Toro comes Risen, chapter four of The Boy in the Iron Box, a blood-chilling serialized novel about an ancient secret that was never meant to be unleashed, featuring exclusive interior artwork. Each chapter can be read or listened to in one breathless sitting.

The mercenaries set an explosive scheme in motion to blow this bad dream to smithereens. But in chapter five of The Boy in the Iron Box, they soon find that even the best-laid plans can backfire.

With the morale of the team fraying, Liev makes a vow. He’s not going to leave anyone behind until the last stand is seen through to its cold and bitter end. On this night, it’s Liev who lies in wait to face everything he’s feared. It’s nothing like he expected.

From Academy Award–winning filmmaker Guillermo del Toro comes Siege, chapter five of The Boy in the Iron Box, a blood-chilling serialized novel about an ancient secret that was never meant to be unleashed, featuring exclusive interior artwork. Each chapter can be read or listened to in one breathless sitting.