The Vampire Diaries -2×21- The Sun Also Rises

With the arrival of the full moon, Elena attempts to get ready for whatever Klaus has in store for her, and Tyler faces his second transformation. The dangerous events quickly escalate out of control, despite an unexpected act of courage. Damon reveals the truth to Stefan about a terrible new development they now face.

watch it here

Ok I've just finished it (couldn't wait longer) and it's a really great episode so enjoy!