Into the Unknown (series)

Into the Unknown was the umbrella title of a series of short stories published online by the BBC in early 2021 leading up to the release of The Lonely Assassins. Each was formatted as a blog post on a blog of the same name, purported to be written by characters such as Larry Nightingale, relating supernatural events in which they had been involved. Due to the in-universe framing device, none of the stories were credited.

The site also had an About This Site section written as if by the in-universe character of Professor Grey.