Alex Rider is a series of spy novels by British author Anthony Horowitz about a 14–15-year-old spy named Alex Rider. The series is aimed primarily at young adults. The series comprises ten novels, as well as four graphic novels, three short stories and a supplementary book. The first novel, Stormbreaker, was released in the United Kingdom in 2000 and was adapted into a motion picture in 2006 starring Alex Pettyfer. A video game was released in 2006, based on the film which received negative reviews. The novels are published by Walker Books in the United Kingdom. They were first published by Puffin in the United States, but have been published more recently by Philomel Books, also an imprint of Penguin Books. The graphic novels are published by Walker in the United Kingdom, and by Philomel in the United States. The tenth novel, Russian Roulette, was released in September 2013.