Sophie Aldred reads this gripping new adventure for the Seventh Doctor and Ace.The TARDIS materialises on a research station, locked in a state of temporal displacement on the surface of Volkoff Epsilon.The station’s human crew are engaged in the study of a mysterious artefact they call ‘the remnant’. Apparently a source of unlimited power, it could be the solution to Earth’s energy problem.Yet the station’s time barrier has become disrupted, leaving the crew confined with no way out. The Doctor realises that both he and Ace - and the TARDIS - are now also trapped by the time displacement.What is the secret of the tiny, spinning artefact? Why have half the base’s personnel already disappeared? And what lurks in the shadows, threatening to overwhelm first Ace and then the whole of Earth?Sophie Aldred, who played Ace in the BBC TV series, reads this tense and atmospheric thriller by bestselling author Adam Christopher.Text © Adam Christopher 2025Cover design by Lee JohnsonCover portraits © BBC(P) 2025 BBC Studios Distribution Ltd © 2025 BBC Studios Distribution Ltd