It seemed like a good idea at the time...

It did. At one point, early on in my career as a 'book writer', this seemed to be a great idea to help promote my books. It didn't work out but I did have fun. That's the good news.
The bad news is that I have a stack of these cartoons left and I've been letting them loose... 

Still, a bad marketing idea does not detract from the fact that A Decent Ransom is a crack of a read... right here.