To Go Back in Time is a spell written in the Warren Book of Shadows that allows witches to travel back in time. In contrast to all other time travel spells, this one allows witches to retain their powers. In a future where Wyatt Halliwell had turned evil, his younger brother Chris cast this spell to go back in time, in an attempt to prevent the dark change happening. With his fiancée Bianca by his side, Chris infiltrated the Halliwell Manor, which had been turned into a museum, and headed to the