In our BDSM relationships, we often are acting out our deepest emotions with each other. If these play involves real feelings such as jealous, fear, want and lust are most powerful. The movie shows us what can happen if we let our emotions run wild. 

"Deep Water" (2021) is a psychological thriller directed by Adrian Lyne and starring Ana de Armas, Ben Affleck, and Tracy Letts. The movie is based on the novel of the same name by Patricia Highsmith.

The plot of "Deep Water" revolves around a seemingly perfect marriage between Vic (Ben Affleck) and Melinda (Ana de Armas). However, their marriage is far from perfect, and they have an open relationship that they use to spice up their sex life. But things take a dark turn when people in their town start turning up dead, and Melinda becomes the prime suspect.

Ana de Armas delivers an outstanding performance as Melinda, a complex and layered character who is struggling with her own demons. She captures the audience's attention with her ability to balance vulnerability and strength, making us feel empathy towards her even when her actions are questionable.

Ben Affleck also gives a solid performance as Vic, a man who is struggling to come to terms with his own insecurities and jealousy. Tracy Letts, who plays the couple's therapist, is also worth mentioning for his fantastic performance.

The cinematography in "Deep Water" is stunning, with beautiful shots of the sea and the town where the story takes place. The film's score also adds to the tension and mystery surrounding the characters.

However, the film's pacing is slow at times, and some of the plot points are predictable, which can take away from the overall suspense. The ending also leaves some loose ends that could have been tied up better.

Overall, "Deep Water" is a well-acted and visually stunning film that offers an intriguing look into the complexities of relationships and the human psyche. While it may not be the most thrilling psychological thriller out there, it's worth a watch for Ana de Armas's outstanding performance alone.