The Assassins is a terrorist group in the Casefiles series. Calling them selves simply the ‘Assassins’, this group of terrorists-for-hire is the main adversary of the Hardy boys and The Network in Casefiles series. The Assassins apparently started back in the 13th or 14th century (although no one knows for sure). Thus they have almost a thousand years of experience. "Nobody takes an Assassin alive" — Al-Rousasa in Casefiles #1 Dead on Target