<Table> <Tr> <Th colspan="2"> Series </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> <Th> Avg UK viewership ( millions ) </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 6 </Td> <Td colspan="1"> 8 October 2015 ( 2015 - 10 - 08 ) </Td> <Td> 12 November 2015 ( 2015 - 11 - 12 ) </Td> <Td> 6.44 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 6 </Td> <Td colspan="1"> 5 January 2017 ( 2017 - 01 - 05 ) </Td> <Td> 9 February 2017 ( 2017 - 02 - 09 ) </Td> <Td> 6.91 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 6 </Td> <Td colspan="1"> 15 July 2018 ( 2018 - 07 - 15 ) </Td> <Td> 19 August 2018 ( 2018 - 08 - 19 ) </Td> <Td> TBA </Td> </Tr> </Table>
<Table> <Tr> <Th colspan="2"> Series </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> <Th> Avg UK viewership ( millions ) </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 6 </Td> <Td colspan="1"> 8 October 2015 ( 2015 - 10 - 08 ) </Td> <Td> 12 November 2015 ( 2015 - 11 - 12 ) </Td> <Td> 6.44 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 6 </Td> <Td colspan="1"> 5 January 2017 ( 2017 - 01 - 05 ) </Td> <Td> 9 February 2017 ( 2017 - 02 - 09 ) </Td> <Td> 6.91 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 6 </Td> <Td colspan="1"> 15 July 2018 ( 2018 - 07 - 15 ) </Td> <Td> 19 August 2018 ( 2018 - 08 - 19 ) </Td> <Td> TBA </Td> </Tr> </Table>
how many episodes in the unforgotten season 2
how many episodes in the unforgotten season 2
6
6