Michelle Trachtenberg is an American actress. On House, M.D. she portrayed heart transplant patient Melinda Bardach in the episode Safe. She is probably best known as the character Dawn Summers in the television version of Buffy The Vampire Slayer. However, her first credit was on Law & Order at the age of six. She has amassed over thirty film and television credits since.
Trachtenberg played a teenage girl in the series, but she is actually only one year younger than Olivia Wilde.