<Tr> <Th> 159 </Th> <Td> </Td> <Td> "Out of the Blue" </Td> <Td> David M. Barrett </Td> <Td> Brian Burns </Td> <Td> October 20, 2017 (2017 - 10 - 20) </Td> <Td> 804 </Td> <Td> 9.08 </Td> </Tr> <Tr> <Td_colspan="8"> Danny and Baez work the case of a detective who was gunned down prior to testifying against a career criminal . Also, Frank personally investigates when Garrett is attacked by a SWAT team outside his home, and Erin brings in a confidential informant against Anthony's wishes . </Td> </Tr> <Tr> <Th> 160 </Th> <Td> 5 </Td> <Td> "The Forgotten" </Td> <Td> Ralph Hemecker </Td> <Td> Allie Solomon </Td> <Td> October 27, 2017 (2017 - 10 - 27) </Td> <Td> 805 </Td> <Td> 8.29 </Td> </Tr> <Tr> <Td_colspan="8"> Danny and Baez investigate the murder of a single mother whose ex-husband has a documented history of violence . Also, Frank deals with the fallout when Mayor Dutton eliminates solitary confinement in prisons, while Jamie's effort to save a young woman who overdosed on heroin has unexpected consequences . </Td> </Tr>

Who plays mayor on blue bloods season 8