6. Bag of Cobras

Complete story — includes the ending

Klaus and Elijah stage a party to learn who is in the cult of the Hollow. Vincent learns that The Hollow emerges every few years, and when it does it commits murders in four different areas. Sofya and Josh search for Marcel, who is still being held in the basement. Hayley has Freya use dark magic to allow her to view her parents murder, looking for the connection to the Hollow. She sees her father drop a key in the floorboard, which takes her to a warehouse where she locates a set of human teeth. Dominic pleads with Elijah to give them Vincent, as the Hollow's followers will always pose a threat. Klaus strikes a deal with Sofya, she will tell him who is loyal to the Hollow, and he will give her Marcel back. Elijah declares war on the Hollow by killing Dominic in front of the party-goers. Hayley shares her finding with the group, where they note that it must be one of four items necessary for the Hollow's followers to revive its human form. Hearing this, Klaus realizes Sofya was a distraction and that the followers have stolen the dagger, which they use to revive Dominic. Horrified, he notes that if they find the other bones before them, The Hollow will come for them all.