First published 1989
When a scientist vanishes into a parallel world, his children risk everything to bring him home. There, they discover a secret war raging between alien factions - a war that threatens to spill into our own. As they race to uncover their father's fate, they must navigate a treacherous landscape of advanced technology and ruthless adversaries. In the end, the family's only hope may lie in making an impossible choice that could alter the course of two worlds.
Genres: science-fiction, adventure, action, alternate-universe
Vibes: fast-paced, suspenseful, thought-provoking
Tropes: found-family, impossible-choice
143 pages · Hardcover · Walker & Co