Wondering when, where and how to watch the upcoming special "Cleopatra's Final Secret" this month? We've got you covered. "Cleopatra's Final Secret" premieres Sept. 25 at 10/9c on National Geographic and streams next day on Disney+ and Hulu. Lawyer-turned-archaeologist Kathleen Martinez has spent 20 years searching for Cleopatra's lost tomb. Her excavations now lead in an unexpected new direction, a submerged site miles offshore in the Mediterranean. She has enlisted Titanic discoverer Bob Ballard, the Egyptian Navy, and a team of archaeologists and divers to help her explore this mysterious location. Catch the official trailer below.

Cleopatra's Final Secret | Official Trailer | National Geographic