<Table> <Tr> <Th> No . </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> UK air date </Th> <Th> UK viewers ( million ) </Th> </Tr> <Tr> <Th> </Th> <Td> `` Episode 1 '' </Td> <Td> Joe Ahearne </Td> <Td> Joe Ahearne </Td> <Td> 18 November 2012 ( 2012 - 11 - 18 ) </Td> <Td> 6.65 </Td> </Tr> <Tr> <Th> </Th> <Td> `` Episode 2 '' </Td> <Td> Joe Ahearne </Td> <Td> Joe Ahearne </Td> <Td> 25 November 2012 ( 2012 - 11 - 25 ) </Td> <Td> 6.64 </Td> </Tr> <Tr> <Th> </Th> <Td> `` Episode 3 '' </Td> <Td> Joe Ahearne </Td> <Td> Joe Ahearne </Td> <Td> 2 December 2012 ( 2012 - 12 - 02 ) </Td> <Td> 7.13 </Td> </Tr> </Table>
the secret of crickley hall how many episodes
3