<Tr> <Th> 154 </Th> <Td> 21 </Td> <Td> "Foreign Interference" </Td> <Td> John Behring </Td> <Td> Peter Blauner </Td> <Td> April 28, 2017 (2017 - 04 - 28) </Td> <Td> 721 </Td> <Td> 8.74 </Td> </Tr> <Tr> <Td_colspan="8"> Danny and Baez team up with two Russian operatives to search for a dangerous Russian man who entered the U.S. on a diplomatic visa . Also, Frank gets involved in a sensitive case involving Archbishop Kevin Kearns (Stacy Keach), and Erin and Anthony scramble to find out who tampered with evidence in one of their cases . </Td> </Tr> <Tr> <Th> 155 </Th> <Td> 22 </Td> <Td> "The Thin Blue Line" </Td> <Td> David M. Barrett </Td> <Td> Ian Biederman </Td> <Td> May 5, 2017 (2017 - 05 - 05) </Td> <Td> 722 </Td> <Td> 9.24 </Td> </Tr> <Tr> <Td_colspan="8"> After Danny intercepts a shipment of several million dollars that was heading to a drug cartel in Mexico, he and his family become targets when cartel members come back for revenge leaving the family homeless . Also, Jamie works independently to track down a serial killer who preys on the elderly, and Mayor Poole (David Ramsey) confides to Frank that he plans to retire . </Td> </Tr>

Last season's last episode of blue bloods