(FILES) Michelle Trachtenberg arrives at the White House Correspondents' Association (WHCA) annual dinner in Washington, DC, on April 25, 2015. Trachtenberg, the actor known for roles in series including "Buffy the Vampire Slayer" and "Gossip Girl," has died, US media outlets reported on February 26, 2025. She was 39 years old. Police said officers responded to an emergency call just after 8:00 am local time (1300 GMT) on Wednesday, The New York Times said, where they found her in her Manhattan apartment unconscious and unresponsive. (Photo by Nicholas KAMM / AFP) (Photo by NICHOLAS KAMM/AFP via Getty Images)