The following review is based on a complimentary ARC provided by Amazon Original Stories via Netgalley in exchange for an honest review. Eleven Numbers is a loosely government political/espionage themed thriller involving mathematics and system passwords. Mathematics professor Nathan Tyler is recruited by the US Government to gain access to Russia’s weaponry system protected by encryption designed by a famed (and fictional for the story) Russian mathematician. Consisting of two layers of passcodes, one that has eleven possible numerical options, Tyler is tasked with determining which is the key. Best known for his long-running Jack Reacher series, Lee Child is a veteran of crime thrillers and this short story has good pacing and is engaging to read. As a mathematician and an unorthodox character for a crime thriller, Eleven Numbers obviously lacks the action compared to Child’s other works but makes up for it with unexpected twists and more dialogue-focused “action”. One prominent plot twist flips the whole story on its head and made me want to go back and re-read the 2nd half of the short story to check for earlier signs of the surprise. While the the mathematics angle is unique, I personally felt like the overall premise…