by Gemma Barder
First published 2023
When 12-year-old Delia's father disappears, she buries her grief in Alan Turing's fiendish number games. But the puzzles reveal a portal to a parallel dimension, where Delia encounters a brilliant, amnesiac boy. Together they must navigate a strange, hazardous realm to uncover the truth about her father's vanishing - and their own identities. In the process, Delia learns the power of logic, resilience, and the importance of found family.
Genres: science-fiction, adventure, mystery, fantasy
Vibes: suspenseful, thought-provoking, whimsical
Tropes: found-family, portal-fantasy
96 pages · Paperback · Arcturus