Sneak Peek footage, images and synopsis from "The Vampire Diaries" episode "By The Light Of The Moon", with Lauren Cohan ("The Walking Dead"), written by Mike Daniels and directed by Elizabeth Allen, that aired December 8, 2010 on The CW:
"...as the full moon approaches, 'Caroline' helps 'Tyler' prepare for the transformation he is powerless to stop.
"While 'Stefan' and 'Katherine' play mind games on one another, 'Damon' and 'Alaric' are suspicious when a stranger named 'Jules' shows up in 'Mystic Falls', searching for her friend 'Mason'.
"'Elena' is frustrated at the lengths 'Jeremy' and her friends have gone to in order to keep her safe. 'Bonnie' and 'Luka' work together on a spell, while still keeping secrets from one another.
"Finally, 'Elijah' makes an unexpected appearance with an offer that could change everything..."
Click the images to enlarge and Sneak Peek "The Vampire Diaries: By The Light Of The Moon"...