Some scenes in the film hold several similarities to The Shining (1980). The hotel, both by being in the mountains and having the windows closed shut during cold seson, is very similar to the Stanley Kubrick film. Also, the scene where Adrian and Laura are traveling to the hotel by train, is aesthetically similar to the opening credits of The Shining (1980).
The trivia items below may give away important plot points.
The final twist plays like a reverse version of "Witness for the Prosecution". In that movie a female character used prosthetic make-up to save the murderer. Here a female character uses prosthetic make-up to entrap the murderer.