This film is based upon the 2014 novel "The Black-Eyed Blonde" by Benjamin Black, not one of Raymond Chandler's original Marlowe works.
This is the 11th screen version of Philip Marlowe (not counting TV movies as Poodle Springs (1998), etc.). The ten previous were: Hired Wife (1934), Murder, My Sweet (1944), The Big Sleep (1946), Lady in the Lake (1946), The Brasher Doubloon (1947), Marlowe (1969), The Long Goodbye (1973), Farewell, My Lovely (1975), The Big Sleep (1978) and Lacson, batas ng Navotas (1992).
Pacific Studios appears to be a stand-in for RKO, as all the posters are for RKO films, albeit with the actors' names altered.
A poster for "The Black Eyed Blonde," a fictional movie (with the same name as the novel upon which "Marlowe" is based) can be seen in Claire's office, at the end of the movie.