Cast members actually used the doll ("Brahms") to prank each other on the set. On one occasion, one of the cast members propped the doll up outside of the other actor's bathroom in their trailer to scare them. Upon seeing this, they hurled the doll outside of their trailer, and the crew had to repair it, and make a replacement doll.
Lauren Cohan plays an American nanny traveling to the UK for her job as a babysitter. Ironically, while Cohan is an American born citizen she has a British accent after spending her adolescence in the UK which she hides in this film.
In Spain the movie was released directly on VOD (digital platforms) and DVD, but was previously screened in 2 theaters, with a limited release in Barcelona (Phenomena) for 2 days -subtitled version- and a premiere in Madrid (Cines Dreams) for 1 day -dubbed version-.
The trivia items below may give away important plot points.
Although it's only hinted in the film, in earlier versions of the script (back when it was gonna be titled In a Dark Place or The Inhabitant and would make the movie to be much stronger R rated horror thriller) main reason for why Brahms' parents hired Greta was because he wanted to have a girl, and it was also hinted in the script that he was planning to eventually capture and rape Greta. For example, in the original scripted version of the scene where Greta gets out of the shower and realizes that all of her clothes has gone, she spends several minutes walking through the house completely nude (while Brahms watches her) until she covers herself with blanket and goes to the attic, only to end up being locked in it by accident, but also unknowingly saving herself from Brahms who was about to attack and rape her. The scene in the ending where he asks Greta to kiss him was also different, with him grabbing Greta and starting to kiss and fondling her until she stabs him with screwdriver. Script also ended with her killing Brahms and not like the movie where Brahms is still alive after Greta and Malcolm have escaped.
Body Count: 4 - Mr. and Mrs. Heelshire, Emily Cribbs (the girl Brahms killed in his childhood), and Cole. The body count would be 5 if you count Greta's miscarried child. Brahms' fate is undetermined as an unidentified person is repairing the broken doll in the final scene of the film.