Hidden letters on Dead Sea Scrolls revealed, mass Romanian plague grave uncovered, earliest evidence of modern humans in Europe found.

Japanese castle from the 1500s unearthed, 2,000-year-old Roman roads revealed by sinkhole, ancient Egyptian funeral home discovered.

William Wallace's 13th-century fort revealed, gaps in Earth's geological record uncovered, most dangerous place in history determined.

Remains of early transatlantic slave trade victims analyzed, ancient English mill put back into use, mystery of 2-million-year-old stone ball tools solved.

Secrets of Mesoamerican heart extraction unlocked, more than 1,000 Viking artifacts unearthed, Russian region claims to be spared from COVID-19 thanks to ancient mummy.

Stonehenge's LEGO-like construction secrets revealed, 200-million-year-old dinosaur eggs unlocked, ancient primate raft journey from Africa to South America uncovered.

Mysteries of ancient humans' love for ostrich eggs unlocked, history of Nazi camp on British soil revealed, remains of prehistoric rainforest in Antarctica discovered.

Ancient Egyptian lust spell uncovered, mystery of Alexander the Great's tomb closer to being solved, last survivor of the transatlantic slave trade identified.

Unexploded Vietnam War bombs found, gigantic saber-toothed tiger skull unearthed, worm-like ancestor of all life on Earth uncovered.

Lost Mayan city accidentally unearthed, stone chest of ancient Egyptian pharaoh found, structure made of mammoth bones baffles experts.

From one of the only men to ever escape from Alcatraz to a serial killer who gleefully confessed to murdering 21 people, these vintage mugshots are just as unsettling as they are compelling.