The First 48 follows the nation’s top police departments during the critical first 48 hours of murder investigations.

Obsessed examines the anxiety of individuals suffering from extreme obsessive-compulsive disorders, capturing their radically affected home lives, the incredible emotion of therapy, and their courageous attempts to defeat their debilitating conditions.

This drama-doc series takes you back in time to the most shocking and surprising murder cases in history. Our presenter, Nicholas Day, guides us into into the world of the killer as we see how police ingenuity and early forensics helped bring them to justice.

El Shazly and Rashad speak to leading scholars at the Egyptian Museum of Cairo, which houses Tutankhamun’s treasures, enjoy exclusive, behind-the-scenes access to his tomb in the Valley of the Kings, and visit several active dig sites across Egypt, including Saqqara and Luxor. Featuring insight from Secretary General of the Supreme Council of Antiquities Dr. Mostafa Waziry and more.

Four different experts (Mark Bevir, Brian Epstein, Nile Green, Jennifer Michael Hecht) give their candid perspectives on how social science research should be improved.

The Vikings have always been on the "other side" of history, their deeds recorded only by their victims. In this lecture, you'll get at the truth of this enigmatic culture. While a small number were the raiders we know from other accounts, the Vikings had a vibrant trading culture based on the sea.

Mummies. The Book of the Dead. Tomb robbers. Death was big business in ancient Egypt, and in this lecture you'll discover Egyptian beliefs about the afterlife and the journey from this world to the next. You'll learn how to make a mummy and how to get past Osiris at the gates to the afterlife.

Unpack the term "Crusade" and situate it in its cultural context. When Pope Urban said it was the Christians' duty to take up arms against the "infidels," ordinary people were swept up in the idea that they were fighting to save Christianity and their own souls against the advance of Islam.

Celebrity is not a modern phenomenon. Politicians, criminals, actors, and even ordinary citizens in ancient Rome strove for recognition. Here you'll chart the lives of some of Rome's celebrities, including gladiators, charioteers, and the emperor Nero. You'll also look at women who knew how to hog the limelight, including Cleopatra and Theodora.

Look at ways in which the medieval church wielded enormous influence over the lives of ordinary people, and how it did everything in its power to maintain its influence. You'll witness life as a clergyman, go into the world of a monastery, and see what became of those the church deemed heretics.