Frontline : Season 2015

How the NRA became a powerful lobbying force. Included: remarks from individuals on both sides of the gun-control debate, including former NRA spokesman John Aquilino; Vice President Joe Biden; and former NRA executive vice president Warren Cassidy.

An investigation of Vladimir Putin. Included: the claims of criminality and corruption that have accented his reign as Russia's ruler.

The way that doctors care for the terminally ill is examined by writer-doctor Atul Gawande. Included: the struggle many doctors face in talking honestly with dying patients.

A report on the escalating conflict in Yemen. Included: the violent feuds that are tearing the country apart; the rival anti-American and Al Qaeda-aligned forces fighting for control; and the consequences for the region.

Frontline investigates American-born terrorist David Coleman Headley, who helped plan the deadly 2008 siege on Mumbai. In collaboration with ProPublica, the film -- an updated and expanded version of A Perfect Terrorist -- reveals how secret electronic surveillance missed catching the Mumbai plotters, and how Headley planned another Charlie Hebdo-like assault against a Danish newspaper.

Frontline filmmaker Dan Edge spent months on the ground in West Africa, tracing the outbreak's path through Guinea, Sierra Leone and Liberia and uncovering the hidden story of what happened before the world started paying attention. With exclusive access to key global decision-makers and health responders, and gripping firsthand accounts of victims from the jungles of Guinea to the slums of Monrovia, Outbreak exposes tragic missteps in the response to the epidemic

Frontline investigates the spread of dangerous pathogens in our meat -- particularly poultry -- and why the food-safety system isn't stopping the threat. Focusing on an outbreak of Salmonella Heidelberg at one of the nation's largest poultry processors, the documentary reveals how contaminants are evading regulators and causing more severe illnesses at a time when Americans are consuming more chicken than ever.

From veteran Frontline filmmaker Michael Kirk comes the dramatic story of the fight over the CIA's controversial interrogation methods, widely criticized as torture. Based on recently declassified documents and interviews with key political leaders and CIA insiders, the film investigates what the CIA did -- and whether it worked.

Inside the Obama administration’s struggle to deal with ISIS and the deadly civil war in Syria.

Following up on the award-winning collaboration that produced Rape in the Fields/Violación de un Sueño in 2013, Frontline (PBS), Univision, Reveal from The Center for Investigative Reporting (CIR), the Investigative Reporting Program (IRP) at UC Berkeley, and KQED are teaming up to uncover the sexual abuse of immigrant women who clean the malls where you shop, the banks where you do business, and the offices where you work.

Just a generation ago, it was adults, not kids, who changed genders. But today, many children are transitioning, too -- with new medical options, and at younger and younger ages. In "Growing Up Trans," a 90-minute special airing June 30 on PBS, Frontline takes viewers on an intimate and eye-opening journey inside the struggles and choices facing transgender kids and their families.

Hear gripping, first-hand accounts of women who escaped the brutal reign of ISIS. This hard-hitting film explores the lives of women who were held as sex slaves, the people who saved them and women who endured-and also enforced-ISIS' harsh rules.

Two filmmakers set out to interview El Chapo Guzmán, leader of one of the biggest drug cartels — who is now on the lam once again.

When filmmaker Ken Dornstein was 19 years old, his older brother David was one of 189 Americans killed in the bombing of Pan Am Flight 103 over Lockerbie, Scotland. In this three-part series, Dornstein embarks on a quest for answers -- diving deep into the case files, assembling a list of suspected plotters, and tracking them for almost five years across the Middle East and Europe.

Frontline producer Ken Dornstein's search for the terrorists who blew up Pan Am Flight 103 over Lockerbie, Scotland, takes him to Zurich and then back to Libya.

Frontline producer Ken Dornstein's investigation of the 1988 bombing of Pan Am Flight 103 over Lockerbie, Scotland, uncovers information about a possible Lockerbie bomb-maker, whom he attempts to contact.

Viewers go 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 - immigration reform, including policy changes proposed by President Obama.

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.

An investigation into a series of unsolved murders of Vietnamese-American journalists.

A report on ISIS in Afghanistan, including its skirmishes with Taliban and Afghan forces; and how it's training of the next generation of jihadists.