Case File One, subtitled The Stenza, was released online in 2018, alongside The Woman Who Fell to Earth.
- The Stenza originate 5000 galaxies away from Earth.
- The Stenza are the conquerors of the Nine Systems.
- The Stenza came to Earth to hunt humans. Calling it the ritual of the Stenza, they have gotten away with it for years.
- The ritual led T'zim Sha, nicknamed Tim Shaw by Team TARDIS, to Sheffield.
- Stenza warriors such as T'zim Sha use armour to scan their surroundings and adapt to the environment.
- T'zim Sha's face is covered with teeth taken from his victims, representing his conquests.
- Stenza's skin are ice cold and so can kill with a touch.
- T'zim Sha used a "mega-cold" transport pod to travel to the Peak District.
- Ryan Sinclair found the transport pod and called the police, which led to Yasmin Khan being involved.
- The gathering coil was a half organic machine which was used by T'zim Sha to locate his human target.
- The gathering coil implanted DNA bombs.
- Karl, Rahul and the recall circuitry are seen.
- The Thirteenth Doctor defeated T'zim Sha, but not before offering him a chance to change.
Story notes Edit
- Case File One uses imagery from the television story The Woman Who Fell to Earth.