The Secret Code
Tuppence
and Tommy (I do hope I haven’t broken any copyright laws, but I couldn’t
resist) are saving up for a ride in a hot air balloon, but they seem to be
having just as much trouble making money as the characters I named them after.
In the absence of convenient criminals, they sell cookies and lemonade and plan
a party for pets. But criminals come in all sizes, and when first Tuppence’s
school project and then half the money they’ve saved goes missing, Tuppence and
Tommy soon have more on their minds than balloons.