Though never spoken, Gabriel's surname in the script is "Tierney."
Gabriel's tie tack is an Irish threepence coin.
Faye is wearing shoes by designer Christian Louboutin, known for their signature red-lacquered soles.
Prior to production, finding a good title proved to be a challenge. Eric Neal was inspired to use the phrase 'Fait Accompli' while listening to the song of the same title by the band KMFDM. The idea of deliberately misspelling the phrase to add flourish came from Walt Sloan, in the spirit of Inglourious Basterds (2009).
The prop Walther PPK pistol used by Walt Sloan was subsequently loaned to the films Out of Sight (2014), Intersection (2014), and The Judas Run (2016).