Turtles All the Way Down

Turtles All the Way Down is a young adult novel written by American author John Green. The novel was published on October 10, 2017 by Dutton Books. It is Green's fifth solo novel, and his seventh overall. Its publication was announced during VidCon 2017, the online video conference co-founded by Green and his brother Hank. It was his first published work since his 2012 novel The Fault in Our Stars. The novel debuted at number 1 on the New York Times bestseller list in the category of "Young Adult Hardcover Books". It stayed at the top of the list for 15 weeks and remained on the list for 62 weeks. In December 2017, Green announced that a film adaptation was in development, with filming beginning in April 2022 after years in development hell.