While you can't judge a book by its cover, you can judge a book by the first sentence.
From C. S. Lewis' The Chronicles of Narnia: Prince Caspian
From Aaron Reynolds' The Incredibly Dead Pets of Rex Dexter
From Nancy Springer's Enola Holmes and the Black Barouche
From Maria Scrivan's Nat Enough
Angie Sage's Septimus Heap: Physik
From Richard and Florence Atwater's Mr. Popper's Penguins
From C. S. Lewis's The Chronicles of Narnia: The Horse and His Boy
From Mike Thayer's The Double Life of Danny Day
From Jared Cullum's Kodi
From Angie Sage's Septimus Heap: Flyte
From Elana K. Arnold's Bat and the End of Everything
From Raina Telgemeier's Sisters
From Nancy Springer's Enola Holmes: The Case of the Gypsy Good-bye
From C. S. Lewis' The Chronicles of Narnia: The Lion, The Witch and the Wardrobe
From Lemony Snicket's All the Wrong Questions: Why Is This Night Different from All Other Nights?
First Sentence of a New World 