Heartsease

'At a future time in England when anyone knowledgeable about machines is severely punished as a witch, four children dare to aid in the escape of a "witch" left for dead.' --summary, WorldCat library record {{OCLC|973655029}} "The story--a kind of reverse science-fiction--tells how two children rescue a near-dead witch (an American observer with a two-way radio) ..." --brief review by {{a|Naomi Lewis}}, The Observer 1969-08-03 p. 25