Return Spell

The Return Spell in the Book of Shadows was used by the Charmed Ones in the alternate future, in which Prue was still alive. It allowed them to return back to the time in which they originally belonged after using the To Move Ahead in Time spell.

Morality Bites
During the witch trials in 2009, which started after Phoebe Halliwell was exposed as witch and convicted for murder, Prue and Piper Halliwell planned to use this spell before their sister would be burned to death. They found the Book of Shadows in a wall safe in Prue's office at Bucklands and sought for the Return Spell. Piper mentioned that it was after the demon with the tusk and before the To Discourage a Lover spell. However, the spell wasn't there anymore, suggesting that their future lives had already used it once.

Appendices

 * Take us back from
 * whence we came
 * To Time and place
 * that are the same
 * Let past be present
 * that time regain