"Dangerous Days" by Mary Roberts Rinehart is an exciting detective story set in an environment of intrigue, mysterious crimes and danger. The main character, a young woman, witnesses a crime and decides to reveal a secret that threatens not only herself, but the entire city. The author skillfully weaves riddles and intertwines storylines that keep the reader in suspense until the last page. "Dangerous Days" is a work that will not leave indifferent fans of a tense plot and unexpected developments.