<Li> Sean Patrick Thomas as Special Agent Karl Dupree . Dupree initially assisted the Lightman group on a case involving a controversial South Korean ambassador who is presumed to be an assassination target at his son's state wedding . Torres and Dupree are romantically involved later in season one . He also defends Torres against Loker when he divulged sensitive information to the SEC while working on a case . (Season 1 only) </Li> <Li> Brandon Jones as Liam, Emily Lightman's boyfriend, a high school jock who is not intimidated by Cal Lightman . Emily breaks up with him because he does not believe in sex before marriage . (Season 3 only) </Li> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 13 </Td> <Td> January 21, 2009 </Td> <Td> May 13, 2009 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 22 </Td> <Td> September 28, 2009 </Td> <Td> September 13, 2010 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 13 </Td> <Td> October 4, 2010 </Td> <Td> January 31, 2011 </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Season </Th> <Th> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

When did the show lie to me end