Filmed in Barcelona.
Rosie Day plays a character named "Sierra."
Noah Silver will be playing "Jules Duret, the son of the school's music professor."
Director Rodrigo Cortes also helmed Buried and Red Lights.
Fans may remember 1997's I Know What You Did Last Summer was also based on a Lois Duncan novel.
Based on the 1974 Lois Duncan young-adult novel with the same name.