Egypt's first female pharaoh disappears around 1457 BCE --- was she murdered? Find out how DNA closes the case. The ancient Arabian Peninsula city of Ubar vanishes, seemingly without trace. Find out how old maps and modern space shuttles help solve the mystery. Sir John Franklin's 1845 expedition to find the Northwest Passage is never heard from again. Find out how spectroscopy points to some probable explanations. Case Closed? examines these and six other mysteries from an