Doctor Who and Planet of the Daleks
Jo peered through the panel and saw — nothing. Yet someone had entered the cabin. She could hear hoarse breathing and stealthy padding footsteps. A beaker rose in the air of its own accord, then dropped to the floor... The Invisible Enemy
After pursuing the Daleks through Space, Doctor Who lands on the Planet of Spiridon, in the midst of a tropical jungle... and finds more than Daleks. Vicious plants spitting deadly poison, invisible Spiridons attacking from all sides and, in hiding, a vast army waits... for the moment to mobilise and conquer.
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Terrance Dicks
Terrance William Dicks was an English author and television screenwriter, script editor and producer. In television, he had a long association with the BBC science-fiction series Doctor Who, working as a writer and also serving as the programme's script editor from 1968 to 1974