"Devil You Know" is the sixth episode of the fifth season of the American period crime drama television series Boardwalk Empire.
The series follows Enoch "Nucky" Thompson, a political figure who rises to prominence and interacts with mobsters, politicians, government agents, and the common folk who look up to him.
In the episode, Chalky takes an important decision to save Daughter, while Van Alden and Eli are confronted over a failed robbery.
Narcisse explains that he has prevented Daughter from resuming her music career, but Luciano's threat makes him reconsider things.
Finally obtaining enough evidence, D'Angelo secretly releases Eli, allowing him to escape back to Atlantic City.
In September 2014, HBO confirmed that the sixth episode of the season would be titled "Devil You Know", and that it would be written by executive producer Howard Korder, and directed by Jeremy Podeswa.
The site's consensus states: "Despite a shortened season, Boardwalk Empire successfully builds enough back-story and tension to gut the audience with a surprising turn of events.
"[5] Alan Sepinwall of HitFix wrote, "If 'Devil You Know' – instantly one of a handful of the very best episodes this show has ever made – is any indication, the conclusion to this season, and series, will be even more powerful than what's come before.
At the expense of two of Boardwalk Empire's most complex characters (and talented actors), the show now heads into its final two episodes with Nucky Thompson front and center.
"[8] Craig D. Lindsey of Vulture gave the episode a 4 star rating out of 5 and wrote, "Thanks to writer Howard Korder and director Jeremy Podeswa, both story lines were laid out as tightly coiled sequences of hermetically sealed, claustrophobic tension.
"[9] Rodrigo Perez of IndieWire wrote, "Boardwalk Empire is coming to an end, but a quickening momentum is just not something the show has on its mind currently.
"[11] Tony Sokol of Den of Geek gave the episode a perfect 5 star rating out of 5 and wrote, "For instance, we will never see Daughter Maitland through Chalky's eyes anymore.
"[12] Paste gave the episode a 7.6 out of 10 rating and wrote, "'The Devil You Know' completes the stories for two of Boardwalk Empire's leading men, and, as such, it's impossible to watch without wondering about the entirety of their arcs.
It's an uncomfortable question for Boardwalk Empire because the answers aren't really as positive as they should be, particularly in the case of Michael Shannon's Nelson Van Alden.