<Tr> <Th> Starring </Th> <Td> <Ul> <Li> Alyssa Milano </Li> <Li> Rose McGowan </Li> <Li> Holly Marie Combs </Li> <Li> Brian Krause </Li> <Li> Drew Fuller </Li> <Li> Dorian Gregory </Li> </Ul> </Td> </Tr> <Ul> <Li> Alyssa Milano </Li> <Li> Rose McGowan </Li> <Li> Holly Marie Combs </Li> <Li> Brian Krause </Li> <Li> Drew Fuller </Li> <Li> Dorian Gregory </Li> </Ul> <Li> Holly Marie Combs </Li> <Tr> <Th> No. of episodes </Th> <Td> 23 </Td> </Tr>

When does chris tell piper he is her son