Dawn Summers on 'Buffy the Vampire Slayer' was magical energy turned human. Michelle Trachtenberg made her everyone's kid sister.

The Key’s protectors, however, turned the object into a person — Dawn — assuming that someone who is related by blood to the Slayer might have the ultimate protection on earth. Dawn’s arcs were never Buffy at its strongest,

In the week following Michelle Trachtenberg’s death, fan tributes have been popping up all over. The late actress, who made a lasting impression as the titular child detective in Harriet the Spy, was beloved by a generation that grew up with her.

Michelle Trachtenberg, known for her roles Buffy the Vampire Slayer and Gossip Girl died on Wednesday, February 26.

Buffy the Vampire Slayer fans are mourning the heartbreaking death of Michelle Trachtenberg with a walk down memory lane. After the actress passed away at the age of 39 on Feb. 26, Buffy lovers are looking back on her iconic performance as Dawn Summers and planning rewatches of the series in her honor.

News of Michelle Trachtenberg's death prompted tributes from her friends and former "Buffy," "Harriet the Spy," and "Gossip Girl" costars.

Actress Michelle Trachtenberg, known for roles in "Buffy," "Harriet the Spy" and "Gossip Girl" was found dead in New York City Wednesday at age 39.

Sarah Michelle Gellar and Michelle Trachtenberg starred in three seasons of "Buffy the Vampire Slayer" together and remained close following the end of the series.

Michelle Trachtenberg, the actor known for “Gossip Girl,” “Buffy the Vampire Slayer” and “Harriet the Spy” died Wednesday. She was 39.

Michelle Trachtenberg, an actress best known for her roles in "Buffy the Vampire Slayer" and "Gossip Girl," has died at age 39.