Captured
This fast-paced, science fiction adventure is a stand-alone sequel to "The Prometheus Project: Trapped". Along with their scientist parents, the brother-sister duo of Ryan and Regan continue their exploration of a fantastic alien city built deep underground. When the city is captured by a ruthless alien – with unknown capabilities and diabolical plans – and his band of mercenaries, the adult members of the team are taken hostage, and the siblings remain the team's only hope. To save the adults, Ryan and Regan must outwit the brilliant alien and his well-trained force, free the prisoners, and thwart a seemingly unstoppable invasion. Crammed with cliff-hangers, non-stop action, and unexpected twists and turns, this novel introduces scientific topics – sound and hearing, ultrasonic sound, experimental methodologies, flashpowder, human memory, and superconductivity – to children while engaging their imaginations.
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Douglas E. Richards
Douglas E. Richards is the New York Times and USA Today bestselling author of science-fiction thrillers that have sold more than three million copies (see list below). Richards has been celebrated for his gripping, thought-provoking works that blend cutting-edge scientific concepts with heart-pounding narratives.
Richards burst onto the literary scene with his debut novel, "Wired,” published in 2010. The novel garnered widespread acclaim for its ingenious combination of scientific speculation and thrilling storytelling. This success set the stage for a series of bestselling novels, each marked by meticulous research, riveting plots, and characters that resonate with readers.
The Prometheus Project
The Prometheus Project consists of three books. The current recommended reading order for the series is provided below.

