Kill List is a 2011 British thriller/horror film directed by Ben Wheatley, written by Wheatley and Amy Jump, and starring Neil Maskell, Michael Smiley and MyAnna Buring.Jay is a former soldier and sometime Professional Killer who's fallen on hard times. He hasn't worked since a disastrous job in Kiev eight months ago and his wife Shel is pressuring him to do something about their family's financial problems. So when Jay's best mate and business partner Gal tells him about a contract to assassinate a list of targets for a mysterious client, he reluctantly pulls himself out of retirement and takes the job. But it soon becomes clear that this isn't an ordinary hit list — the client insists on Jay signing the contract in blood and his victims take the time to thank him before their deaths. It's clear that Jay and Gal have been dragged into something far bigger and more disturbing than they could possibly have imagined...
Action Girl: The movie firmly establishes Shel is a trained soldier, and we see it in action towards the end.
Arc Symbol: The symbol shown in the poster above. It's first seen at the very start of the film, is carved into the back of Jay's mirror by Fiona and is found by Gal on files in the librarian's safe. Eventually, it's revealed to be the symbol/logo of the cult.
Asshole Victim: Discussed. Jay is adamant that all the people on the list are bad people and deserve to die. Though we see this is true for the librarian, we can only infer that it's true for the others on the list.
The Bad Guys Win: It's not entirely clear what the cult wants, but they seem to come out of the film on top.
Blood Oath: When meeting the client, he slashes Jay's palm open so that both his and the client's blood spills onto the contract. Gal reacts by pointing a gun at the client, but Jay inexplicably finds nothing strange about this.
Cold-Blooded Torture: After seeing the librarian's apparently horrific porn video, Jay decides to torture him before killing him, firstly to get the names of his associates and then just to make him suffer.
Cryptic Background Reference: Kiev. We never find out what happened there, other than it left Jay physically and mentally scarred enough that he spent eight months out of work.
Cryptic Conversation: Jay's victims seem to recognize him and thank him before he kills them. The Librarian even asks him if Gal knows who he is. It's never overtly explained, but this is all apparently a reference to the ending, which implies that the kill list was an initiation ceremony for Jay, with all of the people on the list being members of the cult.
Cult: The client and Fiona turn out to be part of one, and it's implied the targets are too. We don't learn exactly what they want or believe, but they seem to like death and sacrifice.
Darkness Equals Death: Jay and Gal try to escape the cultists in a darkened tunnel system. Gal doesn't make it out alive.
Mercy Kill: After he's mortally wounded by one of the cultists, Jay has to put Gal out of his misery.
Mind Screw: The film's plotting is deliberately opaque and unclear, particularly regarding who's in the cult and what their motivations are. This has opened the film up to a lot of different interpretations.
Mood Whiplash: There's some surprisingly funny moments scattered amongst all the violence and horror.
Mysterious Employer: The client. Neither the characters or the audience ever learn his name and it's never made entirely clear what his agenda is.
Nice Job Breaking It, Hero: Gal warns Jay that attacking the cultists is a bad idea. Jay does it anyway, with tragic consequences as it leads directly to the deaths of Gal, Shel and Sammy.
No Name Given: The names of the client and all of Jay and Gal's targets are never revealed.
An Offer You Can't Refuse: After Jay and Gal try to back out of the job late in the film, the client makes them one of these — they finish the list or their families die.
One Last Job: Pointedly averted, according to Word Of God. Many critics mistakenly got the impression that Jay accepts the contract as this, but the film never even suggests this. Jay doesn't accept the contract as his last job before he retires - killing people is his profession, and he's simply been off work for eight months.
Pay Evil unto Evil: Jay's treatment of the librarian is incredibly brutal, but unlike the others on the list it's made clear that he really deserves it.
Paedophile Priest: Discussed. The first target is a priest, and Jay wonders if this might be the reason he's on the list.
Plucky Comic Relief: Gal acts as this, providing much needed light relief in what is a very dark film.
Roaring Rampage of Revenge: The porn on the librarian's computer provokes one of these in Jay. He goes "off-list" and tortures and kills the librarian in an exceptionally brutal way, then goes and murders all his associates too. Gal is visibly shocked by this.
Shell-Shocked Veteran: Jay, maybe. He's been semi-retired since a mission in Kiev, and tells his son stories about his experiences in "Baghdadistan".
Snuff Film: What the librarian's porn collection (presumably) consists of.
Steel Ear Drums: Gal and Jay fire their guns repeatedly in a narrow stone tunnel with no apparent affect to their hearing.
Take Our Word for It: We (thankfully) don't get to see the librarian's porn video, but we know it was bad enough to provoke a very extreme reaction from Jay, leading to the deaths of everyone associated with it.
Through the Eyes of Madness: It's initially implied that some of the weirder events in the plot might be symptomatic of Jay suffering from PTSD (such as, for example, a bizarre sequence in which he looks out his hotel window and sees Fiona standing there, waving at him). By the end of the film, it looks a lot more like the events depicted are really happening.
Vitriolic Best Buds: To a point. Jay and Gal are close friends, but as the film progresses, the vitriol is sometimes not teasing on Jay's part.
Whole Plot Reference: Bizarre as it may sound, the whole film is a play upon Arthurian myth and legend.