The killers of Berta Caceres had every reason to believe they’d get away with murder. More than 100 other environmental activists in Honduras had been killed in the previous five years, yet almost no one had been punished for the crimes. Bloomberg’s Blood River follows a four-year quest to find her killers – a twisting trail that leads into the country’s circles of power.

Blood River is out now.

See omnystudio.com/listener for privacy information.