Before she knows it, the drawings are appearing in her locker with mysterious notes encouraging her to open up about her identity. (mindbodygreen.com)
The aliens who created this environment are not shown as the film ends on this very mysterious note, which has been a source of much commentary and has inspired meanings ranging from: it's all rubbish to something divine has happened. (homepages.sover.net)
When You Reach Me by Rebecca Stead: Four mysterious notes change Miranda's life forever. (yuason.com)