After Tiller is an official selection documentary for the 2013 Sundance Film Festival. It follows the four remaining late-term abortion doctors in the United States.

Dr. Tiller was killed four years ago while attending a church service for being an abortion provider. More specifically, he provided late-term abortions – a rare procedure done to save a woman’s life or in the wake of detected abnormalities in a fetus. Late-term abortion remains one of the most controversial aspects of our ongoing national discourse on reproductive rights.

After Tiller, which will premier September 20 in New York and October 4 in Los Angeles, gives an in-depth look into the lives of the remaining late-term abortion doctors in this country – Dr. LeRoy Carhart, Dr. Warren Hern, Dr. Susan Robinson and Dr. Shelley Sella – as well as their staffs and their patients, creating an emotional, heartwrenching image of how complicated abortion in America is, and why the work these doctors do is important.

You can watch a selected clip on Huffington Post. HuffPo live also interviewed three of the remaining doctors for a recent segment in which they explained why they continue to do their work amid death threats and constant harassment from anti-choice groups.

All images, including the feature, c/o the After Tiller press kit.