"Listen to me. All of you. There is no escape!" From suspicious activities in an English stately home to the rainforests of Colombia - the UN Military and their scientific advisor Guy Dean are on the trail of a global conspiracy - one that threatens the destruction of civilisation. The Zygons have returned to Earth and this time they will give no quarter in their search for a new homeland.
Written by Paul Dearing. Directed by Nicholas Briggs. Produced by Bill Baggs. Featuring: John Albasiny (Guy Dean) Andrew Fettes (The Colonel) Kirsty Yates (Julie) Nicholas Briggs (The Captain) Daniel Gabriele (Andrew Molton) Susan Travers (Morag) Kenneth J. Bentley (James); Arthur Wallis, David Sax (Zygons).