Lana, Lois and Chloe are possessed; Clark looses his powers; Lana learns who really got Jason fired.

What's up with Countess Isabelle Thoreaux? In France, in 1604, Countess Isabelle Thoreaux and two friends are caught and burned at the stake for being witches. Before she dies, she tells the magistrate that she'll be back.

What's up with Lana? Lana and Jason are sitting by the fire. Lana bought "The Spell Book of Countess Isabelle Thoreaux" on Ebay. The same book Isabelle read from the night she was burned. When Lana touches a symbol in the book that's identical to the one from the tomb, her tattoo lights up and the fire flares. Jason asks if she's ok... "I've never been better," Lana proclaims. She's been possessed by the Countess Isabelle.

What's up with Lois? Lois shows up at the farm and tells Clark to help her set up for Chloe's surprise 18th birthday party that will take place tonight. Clark's hesitant, a Princeton recruiter is showing up to talk to him, and his parents are away. Lois won't be denied and the party is on!

What's up with Lex? Lana goes to Lex's and asks for a wine. While Lex gets her one, she notices the manuscript that contains the hidden map. She tells Lex she knows what it is and why he wants it. Lex is confused, but soon becomes angry when she makes it vanish. However, before he can do anything she tells him the stones are hers and casts a spell on him, making him play the piano, without knowing why.

What's up with Chloe? Lana is creating a potion when Chloe and Lois show up. Later in the woods, Lana has a toast for Chloe and Lois. The wine is spiked with the potion and soon Lois and Chloe are possessed by Isabelle's friends Briana and Madeline, respectively, who were also burned the same night. The three head to the party and kick it into high gear. Lana blows off Jason and casts a spell on the remaining guests. Everyone's partying and Clark has his shirt off when Mr. Jacobson from Princeton shows up... he's not impressed.

What's up with Clark? The next day, Clark goes to see Lex. He finds him still playing the piano. He can't stop. Clark pushes the piano away and before Lex passes out he implicates Lana. When Clark goes to see her, he finds that Jason's already feeling her wrath. Jason found out that Isabelle had taken possession of Lana's body, Clark saves him, but he's unconscious. Lana leaves a message of fire: Barn at Midnight. When Clark arrives, the three witches battle him. They think he has magical powers too, and they overwhelm him and soon rid him of his powers.

How it ends up: They chain Clark up in the barn. They know he knows of the stones of power and that he knows where one is. They try torture and seduction and finally use a spell to get him to reveal its location... the caves! They vanish. Soon Jason shows up and frees Clark. He tells him about the book and they split up to find the girls. Clark meets them in the hidden room in the cave. He's got a shotgun, but not for long. Lana picks up the stone... but it's too hot and she screams as it drops from her hand. When Clark picks it up, his powers are restored. This time, he doesn't hesitate and uses his heat vision to burn the book.

After a surge of power, the three girls wake up unaware of the past 24 hours. Later, Lex shows up to see Lana. He tells her Clark didn't get Jason fired... he did. He tries to explain that he's trying to protect her. She doesn't buy it and tells him she doesn't want him in her life. She goes to the barn to thank Clark for saving her and tells him about her tattoo and what happened in Paris. He tells her he's seen it in the cave wall but that he doesn't know what it means.