A young French journalist goes undercover to expose how ISIS recruits disaffected youth through social media. The author, Anna Erelle, infiltrates online networks and forms a deep connection with a key ISIS member to understand their methods. This investigation reveals the sophisticated use of technology and social media by terrorist organizations to target and radicalize vulnerable young people. The narrative framework is that of an investigative report, detailing the risks and ethical complexities of such deep undercover work.

The book is recognized for its daring and unprecedented undercover investigation into the methods used by ISIS to recruit young people online. It offers a critical look at the intersection of social media, technology, and terrorism, providing a journalist's perspective on the radicalization process. The work highlights the risks involved in such deep investigative journalism and the complex ethical considerations that arise. Its examination of how extremist groups exploit digital platforms for recruitment has been noted for its timely relevance.