K is for Knowledge

K is for Knowledge is the 11th Episode of the Second Season and the 37th episode Overall  of W.I.T.C.H. It first aired August 21, 2006.

Summary
W.I.T.C.H. gains new knowledge of their sorceress foe Nerissa, a former Guardian and one-time holder of the Heart of Kandrakar. They also gain knowledge from the Oracle about the old guardians, who they were and what happened to Cassidy the former guardians of Water. Meanwhile Will discovers her lightning and animating of objects is called Quintessence, Nerissa targets the Guardians in Meridan and they fight. Nerissa uses Divide and Conquer to get to the Guardians, by going after Taranee.

At school Taranee is in trouble when she is caught with Uriah and his gang including Nigel. After Uriah breaks the statue of "Old Man Sheffield".

Also Taranee decides to turn herself into a "bad girl" to go out with against her mother's will. By sneaking out to see Nigel Ashcroft. Taranee discovers that flames and contact lenses don't mix and when Nerissa arrives she doesn't know who she is as she missed the Kandraker meeting.

When Taranee returns home she's grounded and her mother is very angry.

Trivia

 * Nerissa's name and her back-story are revealed to W.I.T.C.H.
 * Cassidy (former Guardian of water) and Kadma (former Guardian of earth) are introduced in the back-story.
 * Will uses her powers over Quintessence to imbue inanimate objects with life energy for the first time in this episode.