"D is for Dangerous" is the fourth episode of the second season and the thirtieth episode overall of W.I.T.C.H. It first aired June 26, 2006.
W.I.T.C.H.'s new foe, Nerissa, creates beings known as Annihilators and sends them on a rampage in Meridian, while Elyon is on Earth.
Will uses her power over Quintessence in the form of lightning to defeat the Annihilators. Meanwhile Matt is training with the help of Caleb, to become more useful.
In the B-story, Mr. Huggles escapes from the cage and creates a chaos on a restaurant. Thanks to that, Hay Lin gives Mr. Huggles to Taranee, but Taranee's father has an allergy to fur.
Taranee gives Mr. Huggles to Cornelia. Lillian frees Mr. Huggles to meet Napoleon, but both pets are making a chaos. Cornelia gives Mr. Huggles to Elyon, but Mr. Huggles escapes again and returns to Matt.
This episode shows that Will's powers over Quintessence are progressing, as she is now able to manifest and shoot lightning bolts.