Investigation Discovery

District 21 of the Chicago Police Department is made up of two distinctly different groups. There are the uniformed cops who patrol the beat and go head to head with the city's street crimes. And there's the Intelligence Unit, the team that combats the city's major offenses - organized crime, drug trafficking, high profile murders and beyond. These are their stories.

CIA centers on two unlikely partners — a fast-talking, rule-breaking loose cannon CIA case officer, and a by-the-book, seasoned and smart FBI agent who believes in the rule of law. When this odd couple are assigned to work out of CIA's New York Station, they must learn to work together to investigate cases and criminals posing threats on U.S. soil, finding that their differences may actually be their strength.

When the mysterious deep space research vessel USCSS Maginot crash-lands on Earth, Wendy and a ragtag group of tactical soldiers make a fateful discovery that puts them face-to-face with the planet's greatest threat.

In a ruined and toxic future, thousands live in a giant silo deep underground. After its sheriff breaks a cardinal rule and residents die mysteriously, engineer Juliette starts to uncover shocking secrets and the truth about the silo.

Set 200 years before the events of Game of Thrones, House of the Dragon tells the history of House Targaryen as they fight through a civil war.