 Anthony Horowitz was asked in 2012 on Twitter by a fan when this book would come out, to which Horowitz replied that he had not started on the book yet, so certainly not for another 3 years.In 2015, Horowitz stated in a newspaper interview that there would be at least another 6 books written by him before continuing the Diamond Brothers series.There was a film made in 1989 called "Just Ask for Diamond", which was an adaptation of "The Falcon's Malteser".