Therefore, its known narrative elements are not a part of the Doctor Who universe. It may have been the basis for a similar story in another medium, however — and that story may indeed be a part of the DWU.
- You may be looking for the novelisation of this story.
The Krikkitmen was an unproduced serial written by Douglas Adams and featuring the Fourth Doctor and Sarah Jane Smith (only referred to as "Jane"). It was to feature a race of androids called the Krikkitmen, heralding from the planet Krikkit and aiming to destroy all life in the universe. The Time Lords used a temporal prison to lock Krikkit away, but the Fourth Doctor stumbled across a group of Krikkitmen trying to free Krikkit using a key built from parts from the Earth game of cricket.
This script was rejected by editor Robert Holmes in 1976. In 1980, Adams retooled the script as a feature film called Doctor Who and the Krikkitmen and submitted it to Paramount Pictures; after nothing came of this plan, he put many of the ideas from the story into his book Life, the Universe, and Everything, the third book in his The Hitchhiker's Guide to the Galaxy series. He also reused the idea of a Time Lord prison for his unfinished story Shada.