Examine racial tensions in America, the war for control of the GOP and the growing dysfunction in Washington. FRONTLINE investigates the partisanship that gridlocked Washington in the Obama era and the polarized America that Donald Trump inherits as president.

Examine how Obama's promise of change and unity collided with racial and political realities. FRONTLINE investigates the partisanship that gridlocked Washington in the Obama era and the polarized America that Donald Trump inherits as president.

The first-person stories of refugees and migrants fleeing war, persecution and hardship — drawing on footage filmed by the families themselves as they leave their homes on dangerous journeys in search of safety and refuge in Europe.

FRONTLINE and ProPublica go inside Europe's fight against terrorism — the missed warnings and the lingering vulnerabilities. Counter-terror officials describe the challenges of containing the threat of Islamic terrorism in Europe.

FRONTLINE investigates the successes, failures and challenges in the U.S.-led effort to degrade and destroy ISIS.

FRONTLINE goes behind the headlines to investigate what has shaped two polarizing presidential candidates, Hillary Clinton and Donald Trump — where they came from, how they lead and why they want one of the most difficult jobs imaginable.

FRONTLINE investigates allegations of fraud and predatory behavior in the troubled for-profit college industry and explores the implosion of Corinthian Colleges. Also in this two-part hour: "The Education of Omarina" continues a story FRONTLINE has been following since 2012 — showing how an innovative program to stem the high school dropout crisis has affected one girl's journey, from a public middle school in the Bronx to an elite New England private school, and now on to college.

Step inside the Newark Police Department in New Jersey - one of many troubled forces ordered to reform. How do you change a troubled police department?

Who profits when disaster strikes? FRONTLINE and NPR investigate.

The Islamic State group's earliest plans, Islamic radicals who serve as its leaders and how the U.S. missed the many warning signs and failed to stop its rise to power.

Journalist Feras Kilani investigates war-torn Benghazi, the birthplace of Libya's uprising, now besieged by ISIS and warring militias. Journalist Safa Al Ahmad makes a dangerous trip to report on the fighting in Yemen and the stunning human cost of the war. (Both films make up the 1-hour broadcast.)

Filmed over three years, four children survive war-torn Aleppo, Syria, and escape to a new life in Germany.

With undercover footage and on-the-ground reporting, FRONTLINE reveals a side of Saudi Arabia that's rarely seen and traces the efforts of men and women who are working to bring about change in the Saudi kingdom.

A searing, two-hour investigation places America's heroin crisis in a fresh and provocative light — telling the stories of four individual addicts in Seattle, but also illuminating the epidemic's years-in-the-making social context, deeply examining shifts in U.S. drug policy, and exploring what happens when addiction is treated like a public health issue, not a crime.

See an investigation with the New York Times into fantasy sports and online sports betting. With law enforcement cracking down, the film traces the growth of these booming businesses and goes inside their operations at home and abroad.

FRONTLINE, The New York Times and the Canadian Broadcasting Corporation examine the hidden dangers of vitamins and supplements, a multibillion-dollar industry with limited FDA oversight. Explore the risks of taking mega-doses of vitamins and examine how they are marketed and regulated.

An inside look at Israeli Prime Minister Benjamin Netanyahu's political rise and his relationship with the U.S. He and President Barack Obama clash over Iran's nuclear program.