"Circuito chiuso," directed by Giuliano Montaldo in 1978, is a suspenseful Italian thriller that delves into themes of surveillance and paranoia. Set within the confines of a university library, the film explores the reactions and dynamics of a group of individuals who find themselves under unexpected scrutiny when a murder occurs, and they realize the entire incident has been recorded on CCTV.

Montaldo's direction effectively builds tension, utilizing the claustrophobic setting to heighten the sense of entrapment and suspicion among the characters. The film's atmosphere is enhanced by its minimalist score and stark cinematography, which work together to create an unsettling and immersive experience. The choice to confine the action to a single location underscores the feeling of being watched and judged, drawing viewers into the same paranoia that grips the characters.

The performances are solid, with standout roles that capture the complexity and fear of individuals caught in an unexpected crisis. The ensemble cast manages to convey a range of emotions, from panic to stoic calm, as the narrative unfolds. However, the film's pacing can be uneven at times, with certain scenes dragging on and losing the tightness that a thriller of this nature demands.

While "Circuito chiuso" is commendable for its innovative concept and its exploration of surveillance culture-a prescient theme for its time-the screenplay occasionally falters in delivering a coherent and compelling storyline. Some plot twists feel forced and the resolution, while thought-provoking, may leave viewers wanting more clarity.

Overall, "Circuito chiuso" is an intriguing film that deserves recognition for its ambitious take on the psychological effects of constant observation. It is a fascinating watch for fans of 1970s cinema and those interested in the darker aspects of human nature.