Underground Marvels - All Episodes

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.

No job is more stressful, dangerous or exhilarating than those of the Firefighters, Rescue Squad and Paramedics of Chicago Firehouse 51. These are the courageous men and women who forge headfirst into danger when everyone else is running the other way and whose actions make the difference between life and death. These are their stories.

We Brits love our cars but, just like any relationship, sometimes things can get a little rusty. Meet master mechanic Fuzz Townshend and radio and TV presenter Tim Shaw, a petrol-head pair who undertake dramatic automobile interventions across the UK, hoping to return some much-loved motors to their former glory. With a tight deadline to turn each job around without the owners knowing, find out how these neglected classics fell in need of a little loving care – and what Fuzz and Tim can do to get them back on the road.

High Potential follows Morgan, a single mom with an exceptional mind, whose unconventional knack for solving crimes leads to an unusual and unstoppable partnership with a by-the-book seasoned detective.

9-1-1 is a fast-paced exploration into the lives and careers of first responders – cops, paramedics, firefighters – the people who put their lives on the line to save others.