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. Coming to FRONTLINE on Tues., Feb. 9, 2016.

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. Coming to FRONTLINE Tuesday, Feb. 9, 2016.

Fish oil is the third most widely used supplement in the United States. But there can be a big difference when it comes to prescription-quality fish oil and the kind found in over-the-counter supplements.

An investigation into the hidden dangers of vitamins and supplements, a multibillion-dollar industry with limited FDA oversight. On Tues., Jan. 19, FRONTLINE, The New York Times and the Canadian Broadcasting Corporation examine the marketing and regulating of supplements, and cases of contamination and serious health problems.

With Israel-U.S. relations already emerging as a 2016 campaign issue, FRONTLINE presents an epic, two-hour documentary from Michael Kirk that goes inside Israeli Prime Minister Benjamin Netanyahu’s path to power, his combative relationships with multiple U.S. presidents and the implications in America and the Middle East.

With Israel-U.S. relations already emerging as a 2016 campaign issue, FRONTLINE presents an epic, two-hour documentary from Michael Kirk that goes inside Israeli Prime Minister Benjamin Netanyahu’s path to power. "Netanyahu at War" premieres Jan. 5 at a special time -- 9/8c -- on PBS.

NFL sensation Chris Borland was known as a fearless player, but after just one season he retired because he was afraid of head injuries. Now, Borland is known as the most dangerous man in football, a powerful voice in the NFL's growing concussion crisis.

FRONTLINE goes inside a counter-terrorism unit in Karachi, Pakistan that's dedicated to tracking down Taliban suspects.

ISIS is on the rise in Afghanistan -- and they say they're getting young kids to join the jihad. In a special report, FRONTLINE correspondent Najibullah Quraishi reveals on film the degree to which ISIS is gaining a foothold in the country, and how they're focusing their efforts on training a new generation of jihadists.

ISIS is on the rise in Afghanistan — and they say they're getting young kids to join the jihad. In a Nov. 17 special report, FRONTLINE reveals on film the degree to which ISIS is gaining a foothold in the country, and how they’re focusing their efforts on training a new generation of jihadists. Also this hour: exploring a Pakistan police unit's fight against the Taliban.

State by state, laws regulating access to abortion are changing U.S. politics.

Up close with insurgents in Iraq, FRONTLINE investigates who they are and why they fight.

The very real effects of a beefed up torture policy post-9/11.

Coming up on FRONTLINE: New investigations, new collaborations and so much more. Feel the gridlock. Witness the chaos. Know the truth. And experience it all in your own way, at any time of day -- on your morning commute, on your tablet, and as always, Tuesday nights on PBS.

After 12 years of reform and roughly $300 million dollars spent, federal oversight was lifted from the Los Angels Police Department in 2013. Despite significant reforms, the LAPD is struggling to address community concerns and rising violence.

On Tuesday, Nov. 3, 2015, FRONTLINE and ProPublica team up to investigate a wave of terror that targeted Vietnamese-American journalists. Uncovering a trail that leads from American cities to jungles in Southeast Asia, FRONTLINE and ProPublica shine new light on a series of unsolved murders and attacks.

For weeks, the world's eyes have been fixed on the tens of thousands of refugees fleeing war-torn Syria for Europe. But what is life like for those left behind? Correspondent Martin Smith goes "Inside Assad's Syria" to report from government-controlled areas as war rages, with on-the-ground reporting and firsthand accounts from Syrians caught in the crisis.

In "Immigration Battle," a special two-hour feature film presentation from FRONTLINE and INDEPENDENT LENS, acclaimed independent filmmakers Shari Robertson and Michael Camerini take viewers behind closed doors in Washington's corridors of power to explore the political realities surrounding one of the country’s most pressing and divisive issues. Premiering Tues., Oct. 20 on PBS and online.

When Ken Dornstein was 19, his brother was one of 270 people killed in the bombing of Pan Am Flight 103 over Lockerbie, Scotland. Only one person was ever convicted of the plot; who else was involved remains an open case. In "My Brother’s Bomber," a 3-part FRONTLINE series starting 9/29, Dornstein embarks on a gripping search for answers to one of the deadliest attacks on Americans before 9/11.

A feature documentary about two filmmakers who set out to interview El Chapo Guzmán, leader of one of the biggest drug cartels in history. Before his capture in 2014, El Chapo had been on the run from the US and Mexican governments for over a decade -- and after his July 2015 escape from prison, he's on the lam once again.