On the Appalachian Mountains above her home, a young mother discovers a beautiful and terrible marvel of nature: the monarch butterflies have not migrated south for the winter this year. Is this a miraculous message from God, or a spectacular sign of climate change. Entomology expert, Ovid Byron, certainly believes it is the latter.

TWICE WINNER OF THE WOMEN'S PRIZE FOR FICTION
WINNER OF THE PULITZER PRIZE FOR FICTION
THE MULTI-MILLION COPY BESTSELLING AUTHOR

'One of the best books about climate change.' NAOMI KLEIN
'Lyrical, socially-engaged and passionate.' Sunday Times
'There are many moments of lightness ... and of great beauty, too.' Independent
'A compelling plot with lyrical passages and flashes of humour.' Sunday Telegraph

A captivating, topical and deeply human story touching on class, poverty and climate change by the award-winning, global bestselling author of Demon Copperhead and The Lacuna

"The flames now appeared to lift from individual treetops in showers of orange sparks, exploding the way a pine log does in a campfire when it is poked. The sparks spiralled upward in swirls like funnel clouds. Twisters of brightness against grey sky."

On the Appalachian Mountains above her home, a young mother discovers a beautiful and terrible marvel of nature: the monarch butterflies have not migrated south for the winter this year. Is this a miraculous message from God, or a spectacular sign of climate change. Entomology expert, Ovid Byron, certainly believes it is the latter. He ropes in Dellarobia to help him decode the mystery of the monarch butterflies.