Motive is the first book I read by Jonathan Kellerman. I listened to this book on a long plane ride from Hawaii to Washington DC. At the time I did not know that Motive was the 30th book in the Alex Delaware series. It was a good read. It was a fast paced story with twist and turns. I liked the two main characters Milo and Alex. They did worked well together. The only problems I had was too many characters to follow and I was a little disappointed with the ending.