Discussing the different phases in Ismaili history, this book describes both the early Ismailis as well as the contributions of the later Ismailis to Islamic culture in medieval times. A number of chapters deal with key Ismaili individuals such as Hasan-i Sabbah. Other chapters contextualize the Ismailis within the early Muslim societies, in addition to investigating the Ismaili-Crusader relations and the resulting legends on the Ismaili secret practices.