When a colleague is murdered in Aswan, famed archaeologist Dr. Cassandra Stillwell discovers the man had found a scroll that may reveal Cleopatra's elusive final resting place. As Cass pursues the truth on Philae Island, one that may forever change historical understanding of the Last Pharaoh's ultimate fate, dangerous rivals close in and the Nile's annual flood looms.

Across the world, her partner, Ari Morgan, returns home to North Carolina to rescue a family friend trapped in a nursing home that isn't what it seems, fending off dangerous bureaucratic flood waters of her own.

Two investigations-one ancient, one urgent-pull Cass and Ari into a race against time, testing their courage, loyalty, and the bond that holds them together.