Episode 4

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.

The Night Agent is a sophisticated, character-based, action-thriller centering on a low-level FBI Agent who works in the basement of the White House, manning a phone that never rings — until the night that it does, propelling him into a fast-moving and dangerous conspiracy that ultimately leads all the way to the Oval Office.

In this workplace comedy, a group of dedicated, passionate teachers — and a slightly tone-deaf principal — are brought together in a Philadelphia public school where, despite the odds stacked against them, they are determined to help their students succeed in life. Though these incredible public servants may be outnumbered and underfunded, they love what they do — even if they don't love the school district's less-than-stellar attitude toward educating children.

When Calls the Heart is inspired by Janette Oke's bestselling book series about the Canadian West, the series tells the captivating story of Elizabeth Thatcher, a young teacher accustomed to her high society life, who receives her first classroom assignment in Coal Valley, a small coal mining town where life is simple, but often fraught with challenges. Upon arrival, Elizabeth befriends Abigail Stanton, a wife and mother whose husband, the foreman of the mine, along with a dozen other miners, has just been killed in an explosion. The newly widowed women find their faith is tested when they must go to work in the mines to keep a roof over their heads. Set against the wild canvas of a 19th century coal town, Elizabeth will have to learn the ways of the frontier if she wishes to thrive in the rural west on her own.