This is pure fun. The premise is 90% of the book, which is a satire of hard-boiled detective fiction. In this case, the detective can't drive so is constantly hitching rides from people, including a college philosophy major who delivers flowers and ends up serving as the detective's sidekick. The detective is also prone to existential rumination, painfully aware at all times of how much he doesn't, and can never, know. Staples of hard-boiled detective fiction, including the beautiful widow whom the detective falls for, the difficult relations between the detective and the police, bad guys hiding in the shadows, and the deceased's attorneys who seem to know more than they are willing to share populate the story. In the end, the mystery isn't solved, but what else could we expect, given the limitations of human knowledge? :)