Hi Gerry, my first book, called The Bone Detective, was published in 1996 and was about solving crimes using forensics. My next book was about solving wildlife crimes. So I guess I started out writing books about crimes and moved on from there! I've also written about Bugs, Twins, Faces and Hero Dogs. Basically, I love to write about all sorts of real things -- especially if they involve science. So far, I've had 7 books published and have 4 more in the works.