Two of the murders happened in the elite running community of Iten, known as the Home of Champions. Tirop, an Olympian and two-time World Athletic Championship medalist, was found stabbed to death in her home there - soon after clinching a 10,000m world record in Germany. She would have been a favourite at the Paris Olympics this year.
"The culture of elite sport is that we celebrate tunnel vision in order to pursue our goal. But then we become highly vulnerable," says Yale academic Dr Yetsa Tuakli-Wosornu.
Other interviews include Directorate of Criminal Investigation inspector Andolo Munga; coach Joseph Cheromei; Agnes' family and neighbours; and Olympian Viola Cheptoo Lagat, who co-founded Tirop's Angels to stand in unity against gender-based violence.
Death in the Heartlands exposes the harsh challenges young, especially female, athletes face and celebrates the resilience and courage of the women who have organised to challenge the culture and system around elite running in Kenya.
