The Replacements - 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.

Allegiance follows on identity and belonging, policing and politics, and finding truth within the heart of a flawed justice system. Sabrina Sohal is a star rookie police officer who must grapple with the limits of the justice system as she fights to exonerate her politician father Ajeet Sohal. Sohal serves her diverse hometown of Surrey alongside Vince Brambilla, a veteran training officer who sees her potential but doesn't always agree with her forward-thinking methods. Allegiance is the story of a young woman caught between her allegiance to her flag, to her badge, and to her family.

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.