The third novel in the science-fiction trilogy by C.S. Lewis. This final story is set on Earth, and tells of a terrifying conspiracy against humanity.

Swifts live almost entirely in the air. They eat, drink, sleep, mate and gather their nesting materials on the wing, fly thousands of miles across the world, navigating their way around storms, never lighting on tree, cliff or ground, until they return home with the summer.

'An urgent manifesto for collective healing.' David Lammy MP