The Invisible Twins and the Zoo Gang
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!