<Tr> <Th> 55 </Th> <Td> 9 </Td> <Td> "Gloves Off" </Td> <Td> Renny Harlin </Td> <Td> Mark Goffman </Td> <Td> September 11, 2012 (2012 - 09 - 11) </Td> <Td> BCW409 </Td> <Td> 3.80 </Td> </Tr> <Tr> <Td_colspan="8"> Peter sends Neal undercover as a Wall Street stock trader . Neal discovers a White Collar boxing ring where traders fight for insider information . In order to take down the corrupt CEO, Peter and Neal must step out of the office and step in to the ring . Peter makes a huge mistake that sends Sam into hiding . </Td> </Tr> <Tr> <Th> 56 </Th> <Td> 10 </Td> <Td> "Vested Interest" </Td> <Td> Russell Lee Fine </Td> <Td> Jeff Eastin </Td> <Td> September 18, 2012 (2012 - 09 - 18) </Td> <Td> BCW410 </Td> <Td> 3.41 </Td> </Tr> <Tr> <Td_colspan="8"> Peter and Neal attend an FBI conference where someone is trying to steal high valued defense technology, but discover the thief's plan to kidnap the designer instead . After Peter learns the real Sam is dead, a DNA test shows the man they believe to be Sam is actually Neal's father . </Td> </Tr>

When does neil find out sam is his father