The C.D.P.S.: Book Three

Since the Antarctic Counter-revolution the situation on Earth has greatly eased and previously uninhabitable lands are being reclaimed.

But a handful of rebel robots have escaped and are making life difficult for the settlers, so a militia force is sent out to Mount Titan to deal with the rebels.

However, once more, the future of the Earth is in the hands of a few humans and robots whose own existence will depend on the stability of the Betelgeuse system.