Nearly four years after the assassination of North Korean leader Kim Jong-un’s estranged half-brother, Kim Jong-nam, a new documentary seeks to shed light on the brazen airport murder and the involvement of the two young women accused of carrying it out.

Kim Jong-nam's killing here at Malaysia's Kuala Lumpur International Airport in February 2017 was caught on grainy CCTV footage broadcast worldwide, yet many details still remain a mystery.