Farhad Daftary is Co-Director of The Institute of Ismaili Studies, London (IIS), where he also heads the Department of Academic Research and Publications. He is author of the seminal Assassin Legends: Myths of the Ismailis, co-editor of Encyclopaedia Islamica as well as managing editor of the Shi'i Heritage Series and the Ismaili Texts and Translations Series.Amyn B. Sajoo is Scholar-in-Residence at Simon Fraser University's Centre for the Comparative Study of Muslim Societies and Cultures (Vancouver). He has held visiting appointments at Cambridge and McGill Universities, the Institute of Southeast Asian Studies in Singapore, and The Institute of Ismaili Studies in London.Shainool Jiwa is head of the Constituency Studies Unit at The Institute of Ismaili Studies, where she specialises in Fatimid history. Dr Jiwa is on the Board of Governors of Edinburgh Napier University, and serves as a chief examiner in Islamic history for the International Baccalaureate Organization.