Legends of Camelot (novel)

 was a novel released on 10 June 2021 by BBC Children's Books. It was written by Jacqueline Rayner and featured the Tenth Doctor.

Publisher's summary
While investigating a strange energy in Carbury, the Tenth Doctor and Donna Noble are pulled into a different dimension, smashing a giant hole into another world in the process.

As the magic of the hidden dimension slowly seeps out, the Doctor and Donna find themselves in Camelot, where a young squire, Arthur, comes to their aid, and when the Doctor is mistaken for Merlin, they are swept up in the glamorous and daring legends of the Knights of the Round Table.

But something far more menacing has been awakened. Caught in an ancient battle for power, Donna and the Doctor are sucked into a dangerous game. As each move is made and time spins faster, the Doctor must find a way to seal the rift before an unimaginable power is unleashed and the universe is laid to waste.

Plot
to be added

Characters
to be added
 * Tenth Doctor
 * Donna Noble
 * King Arthur

Continuity

 * The Doctor compares the quest for the Shards to his search for the Key to Time, save that the shards are all in one place and he know what they look like.
 * When Lancelot appears, the Doctor observes that he reminds him of an old companion of his, describing the companion in question as a science teacher who is now in his eighties in Donna's time.