Grave Matter is a BBC Books original novel written by Justin Richards and based on the long-running British science fiction television series Doctor Who.

It features the Sixth Doctor and Peri.

The Doctor and Peri arrive on a fog-shrouded island, not even aware of which century they have landed in.

They soon discover that they are on a remote island off the coast of Britain where the local people have put aside modern inventions and lifestyle.

However, when a dead body rises from its grave, and the local school children display uncanny adaptivity, the Doctor must discover the secrets of the scientific research carried out by the island's benefactor.