This article is a stub. You can help The 39 Clues Wiki by expanding it. Olga is the daughter of Drago, who Grace hired in Vespers Rising Part 3 in order to find George S. Patton. Drago named his plane after her. Retrieved from "https://39clues.fandom.com/wiki/Olga?oldid=111183" Categories: Article stubs Vespers Rising Females Non-Cahill Characters Community content is available under CC-BY-SA unless otherwise noted.