<Tr> <Th> 121 </Th> <Td> 10 </Td> <Td> "Chris - Crossed" </Td> <Td> Joel J. Feigenbaum </Td> <Td> Cameron Litvack </Td> <Td> November 23, 2003 (2003 - 11 - 23) </Td> <Td> 4301121 </Td> <Td> 6.0 </Td> </Tr> <Tr> <Td_colspan="8"> A mysterious woman from the future named Bianca arrives to take Chris' powers and bring him back with her forcefully . Piper feels that being witches is stopping her sisters from having the life they want, and advises them to move out and follow their hearts . Bianca is revealed to actually be Chris' fiancée who only came back as "he" would have sent someone else if she had not come . Bianca is revealed to have helped Chris come back in time in the first place and apparently met him after the unnamed evil that rules their future sent her to kill him . Chris also reveals some truth about himself after Piper tries to freeze him and Bianca and fails: he is not a true Whitelighter, he is half - Whitelighter, half - witch like Paige and Wyatt . Bianca strips his powers and brings him back to his terrible future where the evil who rules confronts Chris and Bianca alone; an evil Wyatt . Future Wyatt tries to convince Chris to join him, offering to spare his life if he does . Chris refuses and Wyatt tries to kill him, but he is saved by Bianca who switches back to his side to protect him . Using a spell the sisters left in the attic in the present, Chris reclaims his powers and defeats Wyatt temporarily, but Bianca is mortally wounded and dies . Chris manages to open a time portal and escapes as Wyatt recovers, taking the spell with him so that Wyatt cannot send another assassin back in time . In the present, the sisters forgive him and he remains their Whitelighter, but he swears that if he can't prevent Baby Wyatt from becoming evil, then he will stop him permanently . </Td> </Tr> <Tr> <Th> 122 </Th> <Td> 11 </Td> <Td> "Witchstock" </Td> <Td> James A. Contner </Td> <Td> Daniel Cerone </Td> <Td> January 11, 2004 (2004 - 01 - 11) </Td> <Td> 4301122 </Td> <Td> 5.3 </Td> </Tr> <Tr> <Td_colspan="8"> After trying on a pair of her Grams' go - go boots, Paige finds herself transported back in time to an era of free love and free magic . She discovers Grams, a peace - loving hippie, who is on a crusade to rid the world of evil through the magical power of love, preparing for a "magical be-in" at the manor . Meanwhile in present time a magic - sucking slime attacks the manor . </Td> </Tr>

When do piper and leo get back together in season 6