<P> Production blocks were arranged as follows: </P> <Table> <Tr> <Th> Block </Th> <Th> Episode Title </Th> <Th> Director </Th> <Th> Writer </Th> <Th> Producer </Th> </Tr> <Tr> <Th> </Th> <Td> "The Pilot" "Smile" </Td> <Td> Lawrence Gough </Td> <Td> Steven Moffat Frank Cottrell - Boyce </Td> <Td> Peter Bennett </Td> </Tr> <Tr> <Th> </Th> <Td> "Thin Ice" "Knock Knock" </Td> <Td> Bill Anderson </Td> <Td> Sarah Dollard Mike Bartlett </Td> <Td> Nikki Wilson </Td> </Tr> <Tr> <Th> </Th> <Td> "The Return of Doctor Mysterio" </Td> <Td> Ed Bazalgette </Td> <Td> Steven Moffat </Td> <Td> Peter Bennett </Td> </Tr> <Tr> <Th> </Th> <Td> "Oxygen" "The Eaters of Light" </Td> <Td> Charles Palmer </Td> <Td> Jamie Mathieson Rona Munro </Td> <Td> Nikki Wilson </Td> </Tr> <Tr> <Th> 5 </Th> <Td> "Extremis" "The Pyramid at the End of the World" </Td> <Td> Daniel Nettheim </Td> <Td> Steven Moffat Peter Harness and Steven Moffat </Td> <Td> Peter Bennett </Td> </Tr> <Tr> <Th> 6 </Th> <Td> "The Lie of the Land" "Empress of Mars" </Td> <Td> Wayne Yip </Td> <Td> Toby Whithouse Mark Gatiss </Td> <Td> Nikki Wilson </Td> </Tr> <Tr> <Th> 7 </Th> <Td> "World Enough and Time" "The Doctor Falls" </Td> <Td> Rachel Talalay </Td> <Td> Steven Moffat </Td> <Td> Peter Bennett </Td> </Tr> <Tr> <Th> X </Th> <Td> "Twice Upon a Time" </Td> <Td> Rachel Talalay </Td> <Td> Steven Moffat </Td> <Td> Peter Bennett </Td> </Tr> </Table> <Tr> <Th> Block </Th> <Th> Episode Title </Th> <Th> Director </Th> <Th> Writer </Th> <Th> Producer </Th> </Tr> <Tr> <Th> </Th> <Td> "The Pilot" "Smile" </Td> <Td> Lawrence Gough </Td> <Td> Steven Moffat Frank Cottrell - Boyce </Td> <Td> Peter Bennett </Td> </Tr>

When does the next episode of doctor who come out