A masterpiece of Serbian cinematography for several reasons: 1. The plot is inspired by a real life event that happened in Belgrade, the outbreak of the Variola Vera pox virus that was brought to Yugoslavia by a person who has traveled to the Middle East. 2. The claustrophobic environment of the quarantined hospital gives you chills down the spine. 3. A struggle of humanity in the darkest times 4. Doing research before making the film. Goran Markovic, the director of the movie, had a team of doctors who contributed in making the movie so it would look realistic, and not a fictional horror movie. Outstanding acting and cinematography.