My cat Q

When I wrote The collector, I had a cat called Q. He truly collected hair pins. I'd find them in his food dish and I thought at first the children must have put them there but then I found that Q played with hair pins on the floor, then picked them up in his teeth and carried them to his food dish.

This gave me the idea of writing a story about a clever cat called Q who helped Bree and Luke find the answer to a mystery: who was taking the pigeons from Uncle Max next door?