matt experiences episodes of losing time, so he sets up cameras all over the house to discover what is happening. he also calls jeremy to ask his help since he can't contact bonnie (kat graham). when jeremy sees how desperate matt is and that everyone is looking for bonnie for help, he decides to tell everyone that bonnie is dead despite her wishes and he calls damon. matt later discovers in one of the videos that he has a passenger inside of him who warns him that his friends will come looking for the knife and he has to protect it otherwise they will kill him.