Hasan Sabbah emerge and assassins activite until 1258.

Bâtınism emerged as a result of such a separation. In the early years of the battleship, it was carried out in secret propaganda and spread over time to wide geographies. Hasan Sabbah was the greatest advocate of battinism or ism. With the capture of Alamut, Hasan Sabbah added strength to his power and his bouncers, which he gave orders from his castle, became the fearful dream of that period. Especially the murders and assassinations committed by these bouncers were nightmares of even the greatest statesmen of that period. In this study, we will talk about the concept of İsmâilism, invitation and propaganda methods, the process of Hasan Sabbah on the stage of history, the struggles with the Seljuks and the period of the successors of Hasan Sabbah.