The Charmed Legacy Wiki
To Extract Knowledge
Prue and Piper flip past the ritual
Spell Information
Can be used to remove information from the brain
Various Herbs, Water and Amethyst Crystals
Good Magic
Book of Shadows Scan

This ritual is in the Book of Shadows seen in the Season 2 episode of Charmed, They're Everywhere. There was only an overview shot of it, never seen up close.

Prue also refers to it in order to protect Eric from the Collectors. She says they have to remove the knowledge from his brain forever, and that the spell is in the Book.

The entry reads thus:

To Extract Knowledge

Crush fresh rosemary which
has been cut with silver shears.
Mix with the juice of a pomegranate
and cool spring water.
Warm the mixture,
then rub it into your hands.
Then place your hands on the forehead of the one
who must release the information and recite...
Elixir for remembrance
Releases when warmed by fire.
Put into safe keeping
The knowledge I desire.
You then must rub your hands with amethysts
and moonstones to remove the elixir and
to transfer the information to the stones for safe keeping.


  • A scan of the page was made when the stand in-Book, containing information from the first 3 seasons, was sold at auction.