My second children’s novel was ‘The Card Shark‘.

This was published in the Mammoth Mystery series by Reed Books (Melbourne).
The best way to tell you what the book is about is to check out the back cover blurb (I wrote this, too):
After a severe case of crossed wires, Sean’s valuable sports card collection ends up in the hands of his arch enemy, Max Logan.
When the collection goes missing, Sean is accused of stealing it! Knowing the only way to prove his innocence is to catch the culprit, Sean sets out to catch the Card Shark.
I was very pleased when this book was shortlisted for the Ned Kelly Crime Writing Award (children’s mystery). I didn’t win. Gary Crew won. Oh well, you win, you lose some . . .