Season 1 Episode 21

full size Stefan and Elena Share a Warm Embrace in Episode 1.21, "Isobel"
Credit: The CW ©2010 The CW Network

Title: Isobel
Air Date: May 6, 2010 at 8:00 PM PDT

Isobel surprises Alaric when she returns to town, and he’s not impressed with her demeanor. Although Elena has tons of questions when she finally meets her birth mother, Isobel refuses to answer them, but makes  it clear that finding the mystery machine John Gilbert is searching for is her top priority. Stefan, Damon, and Bonnie help Elena deal with the fallout from Isobel’s dangerous actions.