Ashraf Marwan was Sadat's chief of staff.
In 2002, the London-based Israeli historian Ahron Bregman alleged that Marwan was Israel's "master spy" in Cairo.
Reportedly, Marwan may have been a double agent. (Urban Dictionary: Ashraf Marwan)
The book "The Angel: Ashraf Marwan, the Mossad and the Surprise of the Yom Kippur War," (2010) by Uri Bar Yosef, a political scientist at the University of Haifa, claims Marwan was not a double agent and was, in fact, only spying for Israel.
Marwan's son is married to Hania Moussa, daughter of Amr Moussa.
Amr Moussa hopes to become President of Egypt.