Assassins were members of a secretive group known as the Nizari Ismailis, active during the Middle Ages. They were renowned for their covert operations and targeted killings, often against political leaders and rival factions. Their methods and beliefs have sparked intrigue and myth, leading to the term 'assassin' being used broadly in modern contexts. The Assassins operated from fortified mountain strongholds, most famously Alamut Castle in Persia. They were skilled in stealth and deception, employing a unique blend of religious zeal and tactical prowess. Their legacy continues to influence popular culture, inspiring countless stories and films about covert operatives.