Blackfriars Neverwhere : Season 1 Episode 4

De Carabas concludes his business with Croup and Vandemar. Richard and Door speak with the Angel Islington who sends them on a quest for a key which is held by The Blackfriars. They must escape the lair of Serpentine, where Hunter receives a spear to hunt The Beast of London. The Blackfriars set an ordeal for Richard to pass through before he may obtain the key. The identity of Croup and Vandemar's employer is revealed.