How do you save someone lost in time?
At the stroke of midnight on winter solstice, Libby disappears - vanishing from the face of the Earth. Only her older sister, Kit, and a mysterious boy named Story remember that she ever existed.
To find Libby and bring her safely home, the pair must embark on a perilous journey into the distant past, across a land steeped in ancient folklore. Together, Kit and Story will face dangers beyond their wildest imagination as they race to uncover the secret of the Twelve before Time itself runs out...
The Twelve was the 2024 winner of the Nero Prize for Children's Fiction, winner of the 2025 Tir Na N-Og award in the English-language category, and was a Financial Times and Guardian Book of the Year.