Skios by Michael Frayn

I loved this book. It's a really funny story about mistaken identities and mysterious events at a philanthropic house party on a private Greek island. When a mischievous young Brit takes the identity of the older professor scheduled to give the keynote lecture, lots of amusing hijinks ensue. While the whole story is improbable in parts, and definitely interested in being funny, it also gives the two main characters a great chance to reevaluate their lives and why they're pursing the paths they're on. I'm so glad I came upon this book through the Booker longlist.