Steve and the crew are in Alaska, where Steve abseils into the heart of a glacier, experiencing a cold, harsh and inhospitable world that pushes him to his limits.

Steve and his Deadly crew travel to the remote west coast of Canada, where they see weird and wonderful deadly critters that are stranger than science fiction.

Steve Backshall heads south once more and into Yellowstone national park in the USA. This frozen wonderland is home to the continent's most iconic beasts.