Hank Green has made his name as a YouTube sensation with channels like Vlogbrothers and the education-focused CrashCourse—both co-created with his brother, The Fault in Our Stars author John Green. Now he’s following in his brother’s footsteps once again with his debut novel. Packed with meditations on the nature of celebrity, social media, and the cultural response to the unknown, the tale follows April, who finds herself an unwitting celebrity after making a viral video with a sculpture that turns out to have mysterious “siblings” all over the globe.