Changes

* UK hardcover edition by HarperVoyager the 12th of August 2014 with ISBN 9780007444175 with cover art by [[Jackie Morris]]. The Advance Reader Copy of this edition has a simple design with the lettering from the finished version and a single bee. It was distributed wrapped in an illustrated paper and tied with a blue ribbon with a golden key on it.* US hardcover edition by Del Rey the 12 of August 2014 with ISBN 9780553392425. The ARC uses the same cover design as the hardback with art by [[Alejandro Colucci]].* An Australia & New Zealand trade paperback edition from HarperVoyager the 12th of August 2014 with ISBN 9780007444199.* Kindle edition from HarperVoyager the 12th of August 2014 with ASIN B00IHS20P0.* Audio book by Harper Collins the 12 of August 2014 in two parts, with ISBN 9780008101855 and ISBN 9780007543557.* Audio book by Random House Audio the 12 of August 2014 with ASIN: B00K2899I4.

* a Dutch translation titled ''De Moordenaar van de Nar'' in September 2014 with ISBN 9789024564842 (hardback).* a French translation titled ''Le Fou et l'Assassin'' the 29 of October 2014 by Pygmalion with ISBN 9782756411187.