<Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers ( million ) </Th> </Tr> <Tr> <Th> 133 </Th> <Td> </Td> <Td> `` Bizarro '' </Td> <Td> Michael Rohl </Td> <Td> Brian Peterson & Kelly Souders </Td> <Td> September 27 , 2007 ( 2007 - 09 - 27 ) </Td> <Td> 3T6301 </Td> <Td> 5.18 </Td> </Tr> <Tr> <Td colspan="8"> Clark confronts a bizarre version of himself and the ensuing fight causes Reeves Dam to burst . Lex , who was arrested for Lana 's murder , is caught in the flood of water . Before he can drown , Lex is saved by an unknown girl who he later believes to be an angel giving him a second chance at redemption . Lionel 's body is taken by an unknown person . Chloe is pronounced dead at the hospital , but she resurrects herself in the morgue . Clark discovers his doppelgänger 's weakness , the yellow sun , and exploits it with the help of John Jones ( Phil Morris ) . Lana is revealed to be alive and living in Shanghai , China . </Td> </Tr> <Tr> <Th> 134 </Th> <Td> </Td> <Td> `` Kara '' </Td> <Td> James Conway </Td> <Td> Todd Slavkin & Darren Swimmer </Td> <Td> October 4 , 2007 ( 2007 - 10 - 04 ) </Td> <Td> 3T6302 </Td> <Td> 4.59 </Td> </Tr> <Tr> <Td colspan="8"> Clark discovers he has a cousin , Kara , who was stuck in suspended animation for eighteen years . After a rocky first meeting , where Clark and Kara fight , the two soon band together to find Kara 's stolen ship . Together they find her ship , which was taken by the Department of Domestic Security , but it is in self - destruct mode . Kara absorbs the explosion before it can kill anyone . Later , Kara reveals that a Kryptonian crystal , hidden inside the ship , was stolen before the ship exploded . Lex finds Lana , who used a LuthorCorp clone of herself to help fake her own death , in China . Lex returns to Smallville , determined to find the girl -- Kara -- who saved his life . </Td> </Tr> <Tr> <Th> 135 </Th> <Td> </Td> <Td> `` Fierce '' </Td> <Td> Whitney Ransick </Td> <Td> Holly Harold </Td> <Td> October 11 , 2007 ( 2007 - 10 - 11 ) </Td> <Td> 3T6303 </Td> <Td> 4.82 </Td> </Tr> <Tr> <Td colspan="8"> Kara decides she wants to join the Miss Sweet Corn Pageant . Clark tries to teach Kara to control her abilities , so she does not expose their secrets , but gets frustrated with her lack of concentration . Lana returns to Smallville , with all legal charges dropped against her , and reunites with Clark . Tyler and Tempest , two meteor - infected pageant contestants who witness Kara using her abilities , convince Kara to help them steal some buried treasure . The treasure turns out to be an SOS alert from another Kryptonian on Earth . Lex confronts Kara and promises to find out the truth of her abilities . </Td> </Tr> <Tr> <Th> 136 </Th> <Td> </Td> <Td> `` Cure '' </Td> <Td> Rick Rosenthal </Td> <Td> Al Septien & Turi Meyer </Td> <Td> October 18 , 2007 ( 2007 - 10 - 18 ) </Td> <Td> 3T6304 </Td> <Td> 5.18 </Td> </Tr> <Tr> <Td colspan="8"> Chloe learns that Dr. Curtis Knox ( Dean Cain ) has a surgical cure for those affected by kryptonite , so she sets up an appointment , knowing a side effect could be memory loss . Knox turns out to be an immortal serial killer , and also turns out to be Jack the Ripper . John Jones shows up at the Kent home and warns Clark that he can not trust Kara . John explains that her father , Zor - El , attempted to assassinate Clark 's father . Clark is told to find Kara 's crystal before she does , but he is side - tracked fighting Knox , who is attempting to take Chloe 's heart and transplant it into the woman he loves . Lana uses the $10 million she stole from Lex to buy surveillance equipment to spy on him . </Td> </Tr> <Tr> <Th> 137 </Th> <Td> 5 </Td> <Td> `` Action '' </Td> <Td> Mairzee Almas </Td> <Td> Caroline Dries </Td> <Td> October 25 , 2007 ( 2007 - 10 - 25 ) </Td> <Td> 3T6306 </Td> <Td> 4.65 </Td> </Tr> <Tr> <Td colspan="8"> While filming takes place on the
<Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers ( million ) </Th> </Tr> <Tr> <Th> 133 </Th> <Td> </Td> <Td> `` Bizarro '' </Td> <Td> Michael Rohl </Td> <Td> Brian Peterson & Kelly Souders </Td> <Td> September 27 , 2007 ( 2007 - 09 - 27 ) </Td> <Td> 3T6301 </Td> <Td> 5.18 </Td> </Tr> <Tr> <Td colspan="8"> Clark confronts a bizarre version of himself and the ensuing fight causes Reeves Dam to burst . Lex , who was arrested for Lana 's murder , is caught in the flood of water . Before he can drown , Lex is saved by an unknown girl who he later believes to be an angel giving him a second chance at redemption . Lionel 's body is taken by an unknown person . Chloe is pronounced dead at the hospital , but she resurrects herself in the morgue . Clark discovers his doppelgänger 's weakness , the yellow sun , and exploits it with the help of John Jones ( Phil Morris ) . Lana is revealed to be alive and living in Shanghai , China . </Td> </Tr> <Tr> <Th> 134 </Th> <Td> </Td> <Td> `` Kara '' </Td> <Td> James Conway </Td> <Td> Todd Slavkin & Darren Swimmer </Td> <Td> October 4 , 2007 ( 2007 - 10 - 04 ) </Td> <Td> 3T6302 </Td> <Td> 4.59 </Td> </Tr> <Tr> <Td colspan="8"> Clark discovers he has a cousin , Kara , who was stuck in suspended animation for eighteen years . After a rocky first meeting , where Clark and Kara fight , the two soon band together to find Kara 's stolen ship . Together they find her ship , which was taken by the Department of Domestic Security , but it is in self - destruct mode . Kara absorbs the explosion before it can kill anyone . Later , Kara reveals that a Kryptonian crystal , hidden inside the ship , was stolen before the ship exploded . Lex finds Lana , who used a LuthorCorp clone of herself to help fake her own death , in China . Lex returns to Smallville , determined to find the girl -- Kara -- who saved his life . </Td> </Tr> <Tr> <Th> 135 </Th> <Td> </Td> <Td> `` Fierce '' </Td> <Td> Whitney Ransick </Td> <Td> Holly Harold </Td> <Td> October 11 , 2007 ( 2007 - 10 - 11 ) </Td> <Td> 3T6303 </Td> <Td> 4.82 </Td> </Tr> <Tr> <Td colspan="8"> Kara decides she wants to join the Miss Sweet Corn Pageant . Clark tries to teach Kara to control her abilities , so she does not expose their secrets , but gets frustrated with her lack of concentration . Lana returns to Smallville , with all legal charges dropped against her , and reunites with Clark . Tyler and Tempest , two meteor - infected pageant contestants who witness Kara using her abilities , convince Kara to help them steal some buried treasure . The treasure turns out to be an SOS alert from another Kryptonian on Earth . Lex confronts Kara and promises to find out the truth of her abilities . </Td> </Tr> <Tr> <Th> 136 </Th> <Td> </Td> <Td> `` Cure '' </Td> <Td> Rick Rosenthal </Td> <Td> Al Septien & Turi Meyer </Td> <Td> October 18 , 2007 ( 2007 - 10 - 18 ) </Td> <Td> 3T6304 </Td> <Td> 5.18 </Td> </Tr> <Tr> <Td colspan="8"> Chloe learns that Dr. Curtis Knox ( Dean Cain ) has a surgical cure for those affected by kryptonite , so she sets up an appointment , knowing a side effect could be memory loss . Knox turns out to be an immortal serial killer , and also turns out to be Jack the Ripper . John Jones shows up at the Kent home and warns Clark that he can not trust Kara . John explains that her father , Zor - El , attempted to assassinate Clark 's father . Clark is told to find Kara 's crystal before she does , but he is side - tracked fighting Knox , who is attempting to take Chloe 's heart and transplant it into the woman he loves . Lana uses the $10 million she stole from Lex to buy surveillance equipment to spy on him . </Td> </Tr> <Tr> <Th> 137 </Th> <Td> 5 </Td> <Td> `` Action '' </Td> <Td> Mairzee Almas </Td> <Td> Caroline Dries </Td> <Td> October 25 , 2007 ( 2007 - 10 - 25 ) </Td> <Td> 3T6306 </Td> <Td> 4.65 </Td> </Tr> <Tr> <Td colspan="8"> While filming takes place on the
when does lana come back in season 7
when does lana come back in season 7
`` Fierce '' October 11 , 2007
`` Fierce '' October 11 , 2007