Krista Vernoff

Krista Vernoff wrote several Charmed episodes, including:
 * Coyote Piper
 * Muse to My Ears
 * The Fifth Halliwheel
 * Long Live the Queen
 * Oh My Goddess! Part 1

She worked as a story editor and a co-producer on the show.

She has also worked on the shows:
 * Grey's Anatomy
 * Wonderfalls
 * Law & Order