A mysterious underwater grave is investigated by mummy expert Ramy Romany who studies the world's dead to uncover their secrets. Locals think the grave is guarded by a Mayan serpent deity. When Ramy dives in, he uncovers evidence of biological warfare.

A missing mummy could re-write the history of Abraham Lincoln's assassination. Mummy expert Ramy Romany investigates a potential government cover-up that allowed John Wilkes Booth to escape capture after murdering President Lincoln.