<Table> <Tr> <Th> Episode </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original airdate </Th> <Th> Viewers ( millions ) </Th> </Tr> <Tr> <Th> 5 </Th> <Td> `` Episode 1 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore </Td> <Td> 7 September 2017 ( 2017 - 09 - 07 ) </Td> <Td> 5.09 </Td> </Tr> <Tr> <Th> 6 </Th> <Td> `` Episode 2 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore , Tracey Malone </Td> <Td> 14 September 2017 ( 2017 - 09 - 14 ) </Td> <Td> 4.31 </Td> </Tr> <Tr> <Th> 7 </Th> <Td> `` Episode 3 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore , Tracey Malone </Td> <Td> 21 September 2017 ( 2017 - 09 - 21 ) </Td> <Td> 3.85 </Td> </Tr> <Tr> <Th> 8 </Th> <Td> `` Episode 4 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore , Tracey Malone </Td> <Td> 28 September 2017 ( 2017 - 09 - 28 ) </Td> <Td> 3.53 </Td> </Tr> </Table>
<Table> <Tr> <Th> Episode </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original airdate </Th> <Th> Viewers ( millions ) </Th> </Tr> <Tr> <Th> 5 </Th> <Td> `` Episode 1 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore </Td> <Td> 7 September 2017 ( 2017 - 09 - 07 ) </Td> <Td> 5.09 </Td> </Tr> <Tr> <Th> 6 </Th> <Td> `` Episode 2 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore , Tracey Malone </Td> <Td> 14 September 2017 ( 2017 - 09 - 14 ) </Td> <Td> 4.31 </Td> </Tr> <Tr> <Th> 7 </Th> <Td> `` Episode 3 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore , Tracey Malone </Td> <Td> 21 September 2017 ( 2017 - 09 - 21 ) </Td> <Td> 3.85 </Td> </Tr> <Tr> <Th> 8 </Th> <Td> `` Episode 4 '' </Td> <Td> Marc Evans </Td> <Td> Ed Whitmore , Tracey Malone </Td> <Td> 28 September 2017 ( 2017 - 09 - 28 ) </Td> <Td> 3.53 </Td> </Tr> </Table>
how many episodes are there in safe house 2
how many episodes are there in safe house 2
4
4