Crooked Kingdom is a fantasy novel written by by American author Leigh Bardugo, and was first published by Henry Holt and Co. on September 20, 2016. The story is set in 19th-century Europe and was preceded by Six of Crows (2015).
The book follows on from the previous book, with Kaz, Wylan, Jesper and Nina looking for Van Eck's property documents so that they can sabotage his business prospects. However, they are faced with tribulations when they are confronted by Colm, who demands their outstanding payments to the bank, and Pekka Rollins, who has allied with Van Eck and, as a result, is targeting the crew.
This novel was received positively, with Kirkus Reviews calling the novel "dark and violent...but gut-wrenchingly genuine." Booklist also called it “A delicious blend of masterfully executed elements... Bardugo outdoes herself in this exhilarating follow-up, and series fans will have their eyes glued to every page."