Mind Shadows was one of a series of online comic strips posted to the BBC's Doctor Who website. The comic strips were created using an online tool called Comic Maker. The art consisted of images based upon the 2005-present Doctor Who revival. The BBC asked a number of professional Doctor Who writers to submit stories.
- Rose Tyler, a Dalek and a Slitheen make cameo appearances (but only as illusions).
- The Doctor is trying to take Martha to see the Medusa Cascade.
- The story never explains why the Doctor and Martha are made to face their fears, and the two depart without resolving the situation.
- Martha will later visit the Medusa Cascade, along with the rest of the Earth when the planet is among those stolen by the New Dalek Empire. As one of the Children of Time, she reunites with the Doctor aboard the Cruciform. (TV: The Stolen Earth/Journey's End)