Book review: How can you explain this?

Rescue workers forming a chain to move debris, in an effort to reach children trapped in Pantglas Junior School in Aberfan near Merthyr Tydfil, Glamorgan, Wales, after it was engulfed by a sliding mountain of slag in October 1966. The disaster claimed the lives of 144 people, including 116 children. Picture: PA
On October 20, 1966, 10-year-old Eryl Mai Jones, from Aberfan in south Wales, told her mother about a dream she’d had the night before. “I dreamt I went to school and there was no school there,” she said. “Something black had come down all over it.” The next day, at 9.14am, a colliery waste tip came crashing down the hillside, smothering the village school and the surrounding houses. Eryl Mai was among the 144 dead.