On August 4, 2020, the city of Beirut was devastated by the explosion of hundreds of tons of ammonium nitrate, stored in the port. All eyes turned to Hezbollah, an Islamist movement linked to Iran, which controls a large part of Lebanon. Despite pressure from the street and the international community, the “Party of God” refused any independent investigation into the causes of the explosion. For 40 years, its militants have infiltrated all the workings of the Lebanese state and have defied the law. However, in the mid-2000s, a handful of police officers from the D.E.A., the American anti-drug agency, tried in the greatest secrecy to bring down Hezbollah. The code name of their operation: Cassandra. Their investigation begins in the United States on the still smoldering ruins of the World Trade Centre….