 Season three 's " Forsaken " reveals that Lana , in order to move on with her life , applies and is admitted into a program to study in Paris , France . Season four shows that Lana , while in Paris , began a romantic relationship with Jason Teague ( Jensen Ackles ) . At the beginning of season four , Lana returns to Smallville after receiving a mysterious tattoo on her lower back , which resembles a symbol on the local Kawatche cave walls , when she touched the tomb of Countess Margaret Isobel Theroux . In season four 's " Spell " and " Sacred " , the tattoo acts as a doorway for the spirit of Isobel to inhabit Lana 's body ; each time Isobel takes over Lana 's body she sets out to find the three stones of knowledge , which are also being searched for by Clark and Lex Luthor ( Michael Rosenbaum ) . In the season four finale " Commencement " , Lana is confronted by Jason 's mother Genevieve ( Jane Seymour ) , who is also after the three stones of knowledge , and during a struggle Isobel comes forward and kills Genevieve . The resulting death of Genevieve , who was revealed to have been the cause for Isobel 's death centuries prior in the episode " Bound " , releases Isobel 's control over Lana . 
