SPOILER ALERT!
Riding With Heaven - L.C. Chase I liked this story yet I kept wondering why an FBI agent would give a ride to a guy from Craig's list. Did the FBI not want to cover the cost of gas? Was the big bad agent lonely for company? I waited and waited for an explanation and never got one.
Then at the end they two had no contact for so long. That doesn't fly with me either. If I shot a serial killer I think I would be talking to FBI agents for quite a while.