Secrets of the Nile is a Nancy Drew and Hardy Boys super mystery novella

The Hardys, Nancy Drew, and her acquaintance, Bess Marvin, are posing as newlyweds in Egypt. The Hardys are on the trail of a banker who is being targeted by a band of radicals, while Nancy and Bess are trying to protect the daughter of a friend by her enraged ex-husband. Facing deception, treachery, violence, and vendettas, they must become allies and unmask the truth behind the confusion and chaos.