A riveting police drama about the men and women of the Chicago Police Department's District 21 who put it all on the line to serve and protect their community. District 21 is made up of two distinctly different groups: the uniformed cops who patrol the beat and go head-to-head with the city's street crimes and the Intelligence Unit that combats the city's major offenses - organized crime, drug trafficking, high profile murders and beyond.

When all but one child from the same class mysteriously vanish on the same night at exactly the same time, a community is left questioning who or what is behind their disappearance.

What will be her last straw? A devastatingly bad day pushes a hardworking single mother to the breaking point — and into a shocking act of desperation.

Former top U.S. security adviser Elizabeth "Libby" Lamm is threatened by associates from her dark past including Rachel Burke a steely, commanding politician with an unwavering knack for achieving her goals. Colluding with Rachel is Adrian, an unyielding, patriotic chief of staff. Martin harbors another type of obsession with Libby in this story of betrayal and regret.