Get Carter. The arresting novel which inspired the iconic movie, Paperback

Jack Carter is home for his brother Frank's funeral. Frank's car was found at the bottom of a cliff, with Frank inside. He was not only dead drunk but dead as well. Why would sensible Frank down a bottle of whisky and get behind the wheel? For Jack, his death doesn't add up. So he decides to talk to a few people, but he is soon told to stop.