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The Invisible Twins and the Zoo Gang

John Halden

Can you imagine being able to make yourself invisible?


Oscar and Lucia Knight are very special. Not only are they twins, but they can make themselves invisible, just by thinking about it.


Oscar and Lucia live with their mum and dad and when their birthday comes around, they get a brilliant present - a surprise trip to the zoo!


Because the zoo is closed to all other customers they are the only ones there. Their mum and dad let them walk around by themselves. But when looking at the animals, the twins discover a plot to steal one of the animals - the panda. The plot needs to be stopped - and fast!

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John Halden grew up in the 1950s and 60s, and was a secondary school teacher for many years. He started his teaching career in East London, before moving to Essex. John still goes into a local primary school each week, where he enjoys meeting with young readers and sharing their enthusiasm for reading, as well discussing story ideas.

John lives in Epping in Essex with his wife, Mary. The couple have two daughters and two granddaughters.

Find out more about John Halden, as well as your favourite characters from School Out Of Time, at or visit his facebook page: