7 of the Best New Book Releases Out September 15, 2026

If she were still alive, Agatha Christie would be 136 years old today. Her legacy is so enduring that a character pair of hers who first appeared in 1922—detective couple Tommy and Tuppence Beresford—have gotten an adaptation that airs today. There’s also a manga published by Viz Media, And Then There Were None, Vol. 1, that adapts one of Christie’s most popular stories. When it comes to the other new releases, there are even more of the most anticipated books by the biggest authors coming out this week. There’s also a bevy of celebrity-written memoirs, from Tisha Campbell’s The A Word: A Mother’s Journey Through Autism and Love to Ke Huy Quan’s Never Say Die, to Colin Kaepernick’s The Perilous Fight by Colin Kaepernick. It’s not a memoir, but Gillian Anderson (yes, Scully) also has a new book, More. As for the books featured below, there’s the latest by Emily St. John Mandel and Elizabeth Acevedo, Leigh Bardugo’s highly anticipated dark academia trilogy conclusion, and more. We are eating well this month. Get 15% off annual All Access memberships for a limited time in celebration of Book Riot’s 15th anniversary! Savings amount to more than 3 months of free unlimited access to our ...