Under Pressure is the seventh of the Hyperion graphic novels. It was first published in 2007 by Hyperion Books for Children. It contains the thirteenth and fourteenth issues of the comics: Issue 013: I Know Who You Are and Issue 014: The End of a Dream.
Will, Irma, Taranee, Cornelia, and Hay Lin are five ordinary friends with an extraordinary secret. They have been chosen to be Guardians of the Veil. With the help of the four elements of nature - air, earth, water, and fire - and the power of energy, the five friends must find a way to save the Earth from evil forces.
In GRAPHIC NOVEL #7 Cornelia deals with the loss of Caleb, and Will reveals a secret that shocks W.I.T.C.H. It all unfolds in 128 pages of original 4-color comics.