The Architects of History (audio story)

Publisher's summary
The year is 2044. Earth is enjoying a Golden Age of peace, prosperity and technological advancement… but somebody is plotting to destroy all that. The Selachians, shark-like alien monsters, launch a crippling attack on Earth’s Moonbase, using deadly weapons from the future.

Help is at hand. A police telephone box appears in a Moonbase hangar. A time-travelling hero has returned in the hour of Earth’s greatest need. Now, Elizabeth Klein must fight to save not only the Galactic Reich but Time itself from the mysterious prisoner who has orchestrated these fateful events... the Doctor.

Cast

 * Seventh Doctor - Sylvester McCoy
 * Elizabeth Klein - Tracey Childs
 * Rachel Cooper - Lenora Crichlow
 * Sam Kirke - Ian Hayles
 * Major Richter - Jamie Parker
 * General-Lieutenant Tendexter - Lloyd McGuire
 * The Selachian Leader - Chris Porter
 * Feldwebel/Computer Voice - Rachel Laurence
 * Pilot/Selachian - David Dobson

Continuity

 * The Doctor mentions Klein's lover Major Jonas Faber from her original timeline in 1965. (BFA: Klein's Story)
 * The Doctor refers to his and Klein's encounter with the Cheylis in British Kenya in 1953 (BFA: A Thousand Tiny Wings) and their visit to the Hatching Yard of the Vrill colony (BFA: Survival of the Fittest).
 * The Doctor previously encountered the Selachians on at least three occasions during his second incarnation in the proper timeline. (PDA: The Murder Game, CC: The Selachian Gambit, PDA: The Final Sanction)
 * In the proper timeline, Klein recognises the Doctor from descriptions of his appearance and mentions his presence during the Shoreditch Incident in 1963 (DW: Remembrance of the Daleks), in Kenya during the Mau Mau Uprising in 1953 (BFA: A Thousand Tiny Wings) and at the Shangri-La holiday camp in Wales in 1959 (DW: Delta and the Bannermen). The Doctor tells her that he also visited Colditz Castle in October 1944. (BFA: Colditz)