Michelle Trachtenberg, best known for her roles in "Gossip Girl," "Buffy the Vampire Slayer," and "Harriet the Spy," has died. She was 39. Police responded to a 911 call shortly after 8 a.m. at luxury residential tower in midtown where “officers observed a 39-year-old female unconscious and unresponsive,” according to an NYPD statement. Paramedics pronounced her dead at the scene. No foul play was suspected and the New York Medical Examiner is investigating the cause of death, police said. https://www.9news.com/article/news/nation-world/michelle-trachtenberg-dead-gossip-girl-buffy-the-vampire-slayer/507-9364b777-5603-4e52-9c7f-f6f429923090 More local videos here: https://bit.ly/2Pa0d1l Subscribe to NEXT: http://bit.ly/2eP1GwI Stay connected: 9NEWS Website: http://www.9news.com/ Facebook: https://www.facebook.com/ilike9news X: https://x.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.