The film's score, composed by Julio de la Rosa, perfectly complements the on-screen action, adding to the overall sense of unease and uncertainty. The sound design is also noteworthy, with the use of silence and ambient noise creating an unsettling atmosphere that keeps viewers on edge.

Kormákur's direction is a key element in the film's success, as he masterfully crafts a suspenseful atmosphere, expertly ratcheting up the tension through clever camera work and editing. The use of close-ups, point-of-view shots, and Dutch angles creates a sense of unease, drawing the viewer into Adrián's world and refusing to let go.

At its core, "The Invisible Guest" is a film about the dark side of human nature, exploring themes of deception, manipulation, and the blurred lines between truth and fiction. Adrián's character serves as a prime example, as his actions and motivations are slowly revealed, exposing a complex, troubled individual.

The critical reception of "The Invisible Guest" has been overwhelmingly positive, with the film earning widespread acclaim from critics and audiences alike. The film holds a 94% approval rating on Rotten Tomatoes, with many praising its intricate plot, outstanding performances, and masterful direction.

The film also touches on the idea of perception vs. reality, as the audience is forced to question what is real and what is just a product of Adrián's fevered imagination. This theme is echoed in the film's title, "The Invisible Guest", which serves as a metaphor for the unseen forces that shape our lives.

In conclusion, "The Invisible Guest" is a masterfully crafted film that has earned its place on the top-rated movies list of 2017. Its complex plot, outstanding performances, and expert direction make it a must-watch for fans of psychological thrillers. The film's exploration of the dark side of human nature, coupled with its thought-provoking themes, make it a film that will linger in viewers' minds long after the credits roll.

The cast of "The Invisible Guest" delivers a masterclass in acting, with standout performances from Gutiérrez, Penélope Cruz, and Federico Luppi. The chemistry between the leads is palpable, and their portrayals of complex, multifaceted characters add depth and nuance to the story.

The index of "The Invisible Guest" reveals a film that is both a work of art and a thrilling entertainment, making it a must-see for anyone who appreciates exceptional cinema. If you haven't already, join the ranks of those who have experienced the thrill ride that is "The Invisible Guest".