behind the scenes to ensure that Earth was victorious over alien foes. Vaughn is a driving force behind the Earth Empire, but is defeated by the Doctor. Roz and Chris cannot return to the corrupt Adjudicator force, and join the Doctor and Benny in the TARDIS. The four travellers have several adventures in quick succession, from a journey to the strange pocket dimension known as the System, to an encounter with Chelonians on a distant planet. They also stop the abduction of children from 1919 Earth to fight in an unending war on the planet Q'ell. The Land of Fiction and its new Writer, Jason, trouble the Doctor again, this time creating a fictional "Dr. Who" whose two-dimensional morality contrasts with the complex manipulations of Time's Champion. In this adventure, the Doctor is temporarily reunited with both Ace and his former companion Mel, who is dismayed at the changes the Doctor has undergone since she knew him. The Land of Fiction's energy had escaped into the real world as a side effect of Kadiatu Lethbridge-Stewart's time travel, so the Doctor finds Kadiatu and takes her to the Dyson Sphere inhabited by the culture known as the People, who are so highly advanced that they have a non-aggression treaty with the Time Lords. While the Doctor, Roz and Chris investigate a possible murder, Benny helps Kadiatu overcome the programming which had turned her into a killing machine. Following this, the crews of both the TARDIS and the solar yacht Tiger Moth become involved in the ongoing Sontaran/Rutan conflict. In 1941, Benny spends several months incognito in Nazi-occupied Guernsey, investigating a German weapon which has the potential to change the course of the Second World War – a weapon inspired by a passing remark made by the Doctor to a German scientist in 1936. Psi-Powers Cycle The TARDIS travellers next have several adventures involving humans with psychic abilities. Many of these involve a shadowy organization known as the Brotherhood. The first psi-powers encounter is a final encounter with Vincent Wheaton, who has lost his powers but is manipulating his psychic son Ricky. Next, the time travellers investigate an outbreak of psychic powers on the planet Yemaya 4 in the 23rd century, which turns out to be carrying the mind of a sentient computer. The travellers have several other adventures before their next encounter with the Brotherhood. In the distant Dagellan Cluster, while