This much we know about the upcoming midseason finale of The Vampire Diaries: Tyler will transition to a werewolf during the hour.

This much we've teased about: Stefan and Katherine will get it on during down time in the tomb.

While it's impossible to predict what will actually go down on "By the Light of the Moon" - due to this show's penchant for shocking twists and turns - the official episode description also states that Bonnie and Luca will work on a new spell together, and Elijah will show up with a surprising offer.

Get an early look at scenes from this installment via the following images:

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