Viewers are captivated by 'Spiral', praising its realistic portrayal of the French judicial and police systems. The series is celebrated for its deep, engaging storylines that span entire seasons, and the characters are consistently lauded for being compelling and evolving. Despite its length, the series maintains suspense and quality, making it a standout in French television. However, some feel it peaked in seasons 5 and 6, yet it wisely concluded before diminishing in quality.

👍 Realistic portrayal of judicial and police intricacies.

👎 Some feel the series peaked in middle seasons.