Doctor Who and the Hand of Fear was a novelisation by Terrance Dicks, based on the 1976 Doctor Who television serial The Hand of Fear.
The Tardis lands in England, and Sarah, the Fourth Doctor’s companion, looks forward to going home. A freak accident in a quarry leaves the unconscious Sarah clutching an enormous stone Hand. The Hand is the only surviving remnant of Eldrad, an alien super-being expelled from his planet, Kastria – and it has the power to control the human mind. Using Sarah as its instrument, the Hand goes in search of the atomic energy it needs to regenerate Eldrad’s body. Eldrad is determined to return to Kastria and punish his enemies. The Doctor and Sarah are caught up in the terrifying conclusion of a drama of betrayal and revenge that began millions of years ago.
Landing on Earth, now a barren, desolate planet, Sarah, Harry and the Fourth Doctor are unaware of the large, watching robot. The robot is the work of Styre, a Sontaran warrior, who uses all humans landing here for his experimental programmes. What has happened to the other space explorers who have come here? Why is the Sontaran scout so interested in Earth and is brutally torturing humans, including Sarah Jane? Will the Doctor, be able to prevent an invasion and certain disaster, and save both Earth and his companions?
Doctor Who and the Sontaran Experiment was published by Target on December 7, 1978.