"406 Not Acceptable" is the sixth episode of the fourth season of the American drama thriller television series Mr.
The series follows Elliot Alderson, a cybersecurity engineer and hacker with social anxiety disorder, who is recruited by an insurrectionary anarchist known as "Mr.
According to Nielsen Media Research, the episode was seen by an estimated 0.366 million household viewers and gained a 0.1 ratings share among adults aged 18–49.
Fernando Vera (Elliot Villar) has tied Krista (Gloria Reuben) to a chair, keeping her hostage at her apartment.
As Darlene (Carly Chaikin) prepares to meet with Elliot, she is captured by Dominique (Grace Gummer), who tracked her to Angela's apartment.
Vera is the most obvious case: It's hard to see him as anything but a roadblock to the actual story, an obnoxious interlocutor (no mater [sic] how poetically he speaks) dragging us away from the eventual showdown with Whiterose and the Deus group.
"[5] Kyle Fowle of Entertainment Weekly wrote, "I'm really starting to think that Sam Esmail and company might follow through and deliver a truly bleak ending to this show.
"[6] Alicia Gilstorf of Telltale TV gave the episode a 4.5 star rating out of 5 and wrote, "This latest installment solidifies the degree of talent this cast has to offer and the lack of protagonists we have to root for.
Throw in the composer Mac Quayle's increasingly ominous score and the cinematographer Tod Campbell's confidently stark camera work and you have a recipe for a very black Christmas indeed.
"[8] Vikram Murthi of Vulture gave the episode a 4 star rating out of 5 and wrote, "It's unfortunate that the Elliot/Olivia material so far outpaces the quality of the other two stories this week, but even taken as its own entity, the Vera/Krista face-off definitely drags 'Not Acceptable' down a bit.
"[9] Lacy Braugher of Den of Geek gave the episode a 3.5 star rating out of 5 and wrote, "with Vera now aware of Mr.