20. Taliban Hunters / ISIS in Afghanistan

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.