In this slapstick, illustrated crime adventure, the honest Theo Pincher who doesn't fit in to his family of criminals finds a clever way to save the family dog, Sherlock, from the nasty new police officer.The new police officer Clive is not nice--even the other police are afraid of him. Everything, even the dog, must have a receipt to prove there's no stealing going on. Things without receipts are locked up. Of course, Theo's family don't have a receipt for anything, especially not their dog Sherlock. When Sherlock is caught, Theo makes a plan to get him back using cooking oil, a dog onesie, and cunning--a plan so good that it reveals Clive's true identity and gives him the comeuppance he deserves.