<Tr> <Th> Aliases </Th> <Td> Lauren Reynolds </Td> </Tr> <Tr> <Th> Occupation </Th> <Td> Chief of the London Interpol Office (Former) </Td> </Tr> <Tr> <Th> Title </Th> <Td> FBI BAU Supervisory Special Agent FBI BAU Unit Chief </Td> </Tr> <Tr> <Th> Family </Th> <Td> Unnamed father Elizabeth Prentiss (mother) </Td> </Tr>

What episode does emily come back on criminal minds