The Particular Sadness of Lemon Cake: Conclusion

Hello, bookies. The time has come to discuss Parts Three and Four of The Particular Sadness of Lemon Cake. (SPOILER ALERT!)

Some of you pointed out that Part One and Part Two felt disconnected from one another.  In the remainder of the book, the author marries the two earlier parts and ties up a lot of loose ends.  While still leaving the character of Joseph a bit ambiguous!  How maddening!  Happily, author Aimee Bender has said she'll answer our questions.  So, by August 26th--a week from...