I looked through this book after I finished it to find a good excerpt for the top of this review, but after a little searching, I realized that the humor and O'Neill's breezy but elegant style don't really lend themselves to short excerpts. The entire book is a cohesive whole, ensemble cast story that's part black comedy, part coming-of-age, part meta-fiction. It's very funny but never in a beat-you-over the head sort of way. O'Neill describes both everyday foibles and O'Leary's delusions with equal skill. The mysteries (Who is Nancy Valentine? Who is O'Leary?) are well-woven into the narrative, but if the book has a weakness, it's that the plot isn't as interesting as the characters and the prose, and, when the book begins winding down and tying up its plotlines, it loses some steam.
Still, it's a quick, literary read, funny and thought-provoking, and it's got a really classy-looking cover. What else can you ask for?
Edit: Upon looking for further information about this book and its author, it looks like Kilbrack is out of print. Too bad.