<Table> <Tr> <Th_colspan="2"> Prison Break (season 4) </Th> </Tr> <Tr> <Td_colspan="2"> DVD cover </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 24 </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> Fox </Td> </Tr> <Tr> <Th> Original release </Th> <Td> September 1, 2008 (2008 - 09 - 01)--May 15, 2009 (2009 - 05 - 15) </Td> </Tr> <Tr> <Th_colspan="2"> Season chronology </Th> </Tr> <Tr> <Td_colspan="2"> ← Previous Season 3 Next → Season 5 </Td> </Tr> <Tr> <Td_colspan="2"> List of Prison Break episodes </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Prison Break (season 4) </Th> </Tr>

When did prison break season 4 come out