The roles that are available are-
The detective at the heart of the novel
The killer that the detective faces
The sidekick of the detective that helps solve the crimes
One of the victims
It is a Kickstarter campaign and the money raised will mainly go to finding a published and marketing the book. I expect great sales from this as time goes by. It will be on a similar style to the books of Jo Nesbo and I expect a great response from them.
How about being able to see this as a best-seller or made into a movie and say to your friends "that's me!"