The bizarre origin of the B.P.R.D.s greatest foe Rumors of the Black Flame cult practicing human sacrifice lead downriver and deep into the jungle, while the groups guide is plagued by dreams of a dark goddess.

The B.P.R.D.'s greatest foe was not always a man ... Little English girls are going missing, and the trail leads to a bloodthirsty cult wielding an ancient power of evil--the Cult of the Black Flame. No villain in the history of the Mike Mignola's line of books has caused as much death and destruction as the Black Flame. See what it was like when that power belonged to a secret order of priests hidden in the jungles of Siam. Christopher Mitten (Umbral, Criminal Macabre, Wasteland) joins Mignola and Chris Roberson (Hellboy & the B.P.R.D. 1953, iZombie) to explore an uncharted corner of the Hellboy's fictional world.

A narrow escape from hooded attackers slows the team on their mission to stop a cult's human sacrifice, while their strange guide's dark visions become more urgent but no less mysterious.

Little English girls are going missing, and the trail leads to a bloodthirsty cult wielding an ancient power of evil - the Cult of the Black Flame. No villain in the history of the Mike Mignola's line of books has caused as much death and destruction as the Black Flame. See what it was like when that power belonged to a secret order of priests hidden in the jungles of Siam. Christopher Mitten (Umbral, Criminal Macabre, Wasteland) joins Mignola and Chris Roberson (Hellboy & the B.P.R.D. 1953, iZombie) to explore an uncharted corner of the Hellboy's fictional world.

In an ancient temple lost deep in the jungle, the heroes find proof of the rumored human sacrifices and answers about the Cult of the Black Flame.

The heroes' search finally ends at the temple of the Black Flame cult, but they don't arrive in time to stop what they find there. The final issue!