Sanctuary has only two actors, and the entire plot occurs inside a hotel room (and very occasionally in the corridor outside the room) over one night. Rebecca (Margaret Qualley) is a dominatrix; her client is Hal (Christopher Abbott). They are engaged in a BDSM relationship. The plot is very twisty, and the motivations of the two characters are not revealed to us until the last few moments of the movie.

The performances of Qualley and Abbot are exceptional. There is a deep sexual chemistry between them that is palpable throughout the entire movie. They are complex and flawed characters, and why they behave the way they do is often unclear. This is the intriguing mystery that is the focus of the story.

The direction of Sanctuary by Zachary Wigon is very skilful; he knows how to create a sense of danger within the tightly controlled experiences going on in the claustrophobic hotel room. I found the movie engaging, and I kept guessing until the movie's end. There is hardly any music, and what there is complements the film's tone perfectly. The cinematography is excellent, and the intimate, claustrophobic space of the setting is used to significant effect.

The BDSM theme of the story is a metaphor for the power dynamics that go on in relationships; this symbolism is subtle but effective. Power in relationships is complex, shifting back and forth between individuals who often use it to control others. Sanctuary suggests that power dynamics in relationships are complex and are influenced by gender, wealth, and social status and can have both positive and negative consequences.

Sanctuary is slow-paced, and the controlled chaos that finally leads to what is going on in the relationship can be frustrating. But the delayed gratification is worth it, and the story's last moments are satisfying. The dialogue is witty and engaging, and the banter between the two characters reminded me of some of the old-fashioned screwball romantic comedies we used to watch.

Sanctuary is a well-made film, and it was engaging. However, the circular nature of the dialogue and the late reveal at the end made the journey there often frustrating. This is the biggest problem with the movie; it would have been easy to give up well before the end. I'm glad I persevered, but the movie's enjoyment is mostly in retrospect. I suspect many viewers may give up before seeing the worthwhileness of the film and the point of it all in terms of the theme of power dynamics in relationships.

Sanctuary is for those who enjoy character-driven dramas and twisty plots. However, the slow pace and limited setting may not be for everyone. Additionally, the BDSM theme may not be suitable for all audiences.

The only reason I viewed this was because I've become sort of fascinated by the films that Christopher Abbott takes on. He is not remotely interested in the norm in his many indie films. I've also been impressed now and then by Margaret Qualley. I have now mentioned the entire cast of this film and for an hour and a half we watch these two strange people go at each other. He is a very rich man who has a kink about being dominated and she is a dominatrix. He wants to end these paid for "get-togethers", but she has other ideas. A lot of this is very unpleasant to view and I almost turned it off, but I'm glad that I didn't as it's an odd film, sort of a clever one, that only really provides some satisfaction because of its very final scene which out of the blue put a big smile on my face. That didn't really make it a very good film, but it did make it more interesting, sort of after the fact.