“Dash & Lily’s Book of Dares” is a new novel by Rachel Cohn and David Levithan, the authors of “Nick & Norah’s Infinite Playlist.” In the book, two teenagers write messages to each other in a red Moleskine:

Dash stumbles across a notebook that Lily leaves on a shelf at the Strand. He quickly solves the puzzle she’s created, leading to a Christmastime scavenger hunt that takes the two teens on a wacky trip through NYC.

Read more at ‘Dash and Lily’s Book of Dares’ authors send readers on a wild tour of Manhattan.