<Tr> <Th> 4.10 </Th> <Td> "Secrets of Brother XII" </Td> <Td> February 28, 2018 (2018 - 02 - 28) </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="4"> Gates attempts to uncover a treasure left behind by the Aquarian Foundation . </Td> </Tr> <P> Season 5 started on Tuesday the 29th of May 2018 . The series moved to the Discovery Channel for its 5th season . </P> <Table> <Tr> <Th> No . </Th> <Th> Title </Th> <Th> Original air date </Th> <Th> U.S. viewers (millions) </Th> </Tr> <Tr> <Td> 5.1 </Td> <Td> Pyramid of Legends (also called Lost City of the Snake Kings, Part 1) </Td> <Td> May 29, 2018 </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="4"> </Td> </Tr> <Tr> <Td> 5.2 </Td> <Td> Lost City of El Mirador </Td> <Td> June 5, 2018 </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="4"> </Td> </Tr> <Tr> <Td> 5.3 </Td> <Td> Nazis in Argentina </Td> <Td> June 12, 2018 </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="4"> </Td> </Tr> <Tr> <Td> 5.4 </Td> <Td> Lost Gold of John Lafitte </Td> <Td> June 19, 2018 </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="4"> </Td> </Tr> <Tr> <Td> 5.5 </Td> <Td> Mahogany Ship </Td> <Td> June 26, 2018 </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="4"> </Td> </Tr> <Tr> <Td> 5.6 </Td> <Td> Hunt for the Ruby Slippers </Td> <Td> July 10, 2018 </Td> <Td> </Td> </Tr> </Table>

When did expedition unknown move to discovery channel