Mix your genres and find a new title!
Blender mixes up genres in adult titles to help readers discover new combinations. (Not all results will be appropriate for Gr 8-12, so this may be more for the TL than the student!)
"The Blender is a tool meant to help readers find books that include more than one genre. Using the Blender is easy -- simply pick two or three genres you are interested in and click the "BLEND" button. [...] The database, currently numbering over 500 titles, is not meant to be a definitive list of every blended genre title. [...] Instead, it gives readers a starting point in exploring the blend. Some are personal favorites, some are popular titles."