<Tr> <Th> Original air date </Th> <Td> May 20, 2010 (2010 - 05 - 20) </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 86 minutes </Td> </Tr> <Tr> <Th_colspan="2"> Guest appearance (s) </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Michael O'Neill as Gary Clarke </Li> <Li> Mandy Moore as Mary Portman </Li> <Li> Nora Zehetner as Reed Adamson </Li> <Li> Robert Baker as Charles Percy </Li> <Li> Sarah Drew as April Kepner </Li> <Li> Jesse Williams as Jackson Avery </Li> </Ul> </Td> </Tr>

Who dies in the last episode of grey's anatomy