This BBC Africa documentary is an on-the-ground account of the emergence of violent cultism in Nigeria.

No longer an isolated phenomenon, Nigeria has developed a serious cult problem.

Nigeria's most powerful and deadly cult is Black Axe. Infiltrating politics and civilized society, it even has influence over a handful of top politicians and the Nigerian military.

Gbolahan Peter Macjob is a Nigerian journalist, comedian, author, and martial artist who grew up in Lagos. He witnessed cult killings first-hand.

After 20 years away from his native land, Macjob returned to try and make sense of Nigeria's cultism epidemic.

Black Axe: Nigeria's Deadliest Cult is a 2021 BBC Africa Eye special report documentary on Black Axe, a student fraternity turned global terrorist cult.

To bring international attention to this disturbing issue, Macjob returned to Nigeria. He risked his life to conduct interviews with Black Axe executives and assassins, as well as politicians suspected of cult involvement.