Teskoy Prison is a penal facility under the control of [[The First World]]. It is a pocket universe from which nobody has ever escaped, and is where [[The Sword]], pending his trial, as well as the unnamed brunette woman [[Cristina Thompson]] have been incarcerated.
The Teskoy Prison pocket universe is situated part way within the multidimensional inner shield that protects [[The First World]]. It is little more than a splinter universe, which contains a version of Earth and not much else, lacking both stars and a sun or solar system. The planet has no sources of light or heat besides that generated internally or through inter-dimensional friction. All inhabitants of the planet otherwise live in permanent darkness, with no system of government, support infrastructure, or order.