Mystery/Thriller Deals Book Riot’s Mystery Deals for September 13, 2021 Deals Sep 13, 2021 This content contains affiliate links. When you buy through these links, we may earn an affiliate commission. Amazon Publishing.Today's edition of Mystery Deals is sponsored by Amazon Publishing. $2.99A Midsummer's Equation by Keigo HigashinoGet This Deal$1.99Harvest by Tess GerritsenGet This Deal $2.99Undertow by Elizabeth HeathcoteGet This Deal$2.99Lost and Found in Harlem by Delia C. PittsGet This Deal You Might Also Like Barnes & Noble's Best Books of the Year (So Far) Why Did a High Schooler Hand Her Superintendent A Book at Graduation? One Student's Year of Fighting Book Bans. A Line of Book-Lovers a Mile Long The Best Recent Mysteries for Your Book Club 10 New Horror Books Coming Out in June to Give You the Chills The Most Read Books of the 2024 Goodreads Reading Challenge (So Far)