<Tr> <Td> 12 </Td> <Td> "The Descent" </Td> <Td> January 27, 2011 (2011 - 01 - 27) </Td> <Td> 1.6 </Td> <Td> 1.10 </Td> <Td> 2.1 </Td> <Td> 4.65 </Td> <Td> </Td> </Tr> <Tr> <Td> 16 </Td> <Td> "The House Guest" </Td> <Td> February 24, 2011 (2011 - 02 - 24) </Td> <Td> 1.3 </Td> <Td> 1.13 </Td> <Td> 1.8 </Td> <Td> 4.11 </Td> <Td> </Td> </Tr> <Tr> <Td> 17 </Td> <Td> "Know Thy Enemy" </Td> <Td> April 7, 2011 (2011 - 04 - 07) </Td> <Td> 1.2 </Td> <Td> 1.14 </Td> <Td> 1.7 </Td> <Td> 3.87 </Td> <Td> </Td> </Tr> <Tr> <Td> 18 </Td> <Td> "The Last Dance" </Td> <Td> April 14, 2011 (2011 - 04 - 14) </Td> <Td> 1.3 </Td> <Td> 1.06 </Td> <Td> 1.8 </Td> <Td> 3.87 </Td> <Td> </Td> </Tr>

When do the originals come on the vampire diaries