EXTINCT - Big Thaw

For twelve thousand years, the glacier kept them asleep. This summer, it's melting.

In the hottest August Alaska has ever recorded, a gold mine blasts into the dying Morrow Glacier and breaks open a hidden valley warmed by hot springs. Animals that should have vanished at the end of the last Ice Age are living there.

Two miners are found torn apart on the ice. The company calls it a bear attack. Wildlife biologist Maren Holt knows better the moment she sees the wounds. They were made by teeth like knives.

Now a pack of scimitar-toothed cats is hunting the river town of Gilchrist. They plan ambushes, learn from every mistake and strike from every direction at once. Behind them comes the largest bear that ever walked North America. Behind the bear comes a herd of woolly mammoths searching for the calf that was stolen from them.

Wildfire smoke has grounded every plane. Thawing permafrost has swallowed the only road. The heat is the only thing slowing the predators down, and a cold front is coming.

To save her son and a town of a hundred and twenty people, Maren must lead the Ice Age back where it came from, then bring the mountain down behind it.