A thrilling novelisation of a classic TV experience for the Fourth Doctor and Sarah Jane Smith. In the snowy wastes of blizzard-swept Antarctica, a unusual pod-like object can be unearthed, buried deep in the glaciers. Curiosity turns to security alarm as the pod begins to develop – after that horror when suddenly it cracks open up and a snaking green tendril shoots out, mercilessly searching for the nearest live sufferer. In London, botanical specialists are bewildered, and the Doctor is called directly into fight this unfamiliar horror. But will he maintain time to save Earth through the rapidly dispersing tentacles from the Krynoid, huge man-eating monster from an alien globe?