Terrorist Threat Room

A group of terrorists are using a dingy attic apartment in a warehouse in Leeuwarden as a hideout. What they don't know is that the AIVD (General Intelligence and Security Service) has had them in their sights for some time and has gathered information about possible attacks on major cities in Friesland and the rest of the Netherlands. As soon as the terrorists abruptly all leave the building and other terrorist cells in the Netherlands also start moving, all alarm bells start ringing. There is no time to lose. An elite team breaks into the apartment, but... they find absolutely nothing. This calls for drastic measures. You, the very best code breakers of the AIVD, are urgently called in to look for clues. Somewhere the time and location of the attack (or attacks?) must be found. Your task is to prevent the Netherlands from being plunged into mourning. There is no time to lose!