BOOK: The Sequel is a Perseus Books Group project to be achieved later this month at BookExpo America (BEA): a book that will be compiled and published during the span of the expo.
From the website:
"It’s a book that asks the world to write the first sentence for a yet-to-be-written sequel to any book ever published...A book that will be created...collaboratively. A book that will be published into as many formats as possible in about 48 hours. The publishers, editors, publicists, marketing partners, printers, technology and distribution partners [at the BEA] will all help to generate this book by 4PM, Saturday, May 30."
Royalties from BOOK: The Sequel will go to the National Book Foundation.
You can follow BOOK: The Sequel on Twitter and submit a sentence for the book at the BOOK: The Sequel site.