Question: What is the name of the first book in the series based on a stealth video game series developed by the Danish company IO Interactive?
Related documents: [0]  [DOC] Hitman: Enemy Within is the first novel in the "Hitman" series. It was written by William C. Dietz and released on August 28, 2007, from Del Rey Books. The novel's plot is set between "Hitman 2: Silent Assassin", "Hitman: Contracts" and "Hitman: Blood Money" and revolves around a rival murder-for-hire organization, known as "Puissance Treize" (French for "Power Thirteen"), attempting to destroy Agent 47's employer, the International Contract Agency (ICA). The book's tagline is: "The clone assassin has been played long enough – now it’s more than a game." [END] 
[1]  [DOC] Hitman is a stealth video game series developed by the Danish company IO Interactive. Previously published by Eidos Interactive and Square Enix. IO Interactive remained a subsidiary of Square Enix until 2017, when Square Enix started seeking sellers for the studio. IO Interactive completed a management buyout, regaining their independent status and retaining the rights for "Hitman", in June 2017. The series is available on Microsoft Windows as well as several video game consoles, including the Xbox, PlayStation 2, GameCube, Xbox 360, PlayStation 3, Xbox One and PlayStation 4. The franchise includes two novels, "" written by William C. Dietz, followed by "Hitman: Damnation". [END] 
Answer: 
Hitman: Enemy Within
Hitman: Enemy Within