Sleepy is an original novel written by Kate Orman and based on the long-running British science fiction television series Doctor Who.

It features the Seventh Doctor, Bernice, Chris and Roz.

The Earth colony Yemaya 4 is struck by a plague that causes the colonists to manifest psychic powers.

Some of the group contract the plague, while others travel back in time to try to find out how it started.

Meanwhile, murderous agents threaten to simply kill every innocent person involved.