Grace Wu was a student of Pershing High School during Day 10. Just before 2:30pm, Grace arrived for her appointment at with her chemistry teacher David Harris to go through her work. Harris came over and opened the door, and told Grace that he was busy with another student. Grace saw it was Amira Dudayev at a desk, reading a book. Harris told her to come back tomorrow for her appointment, and Grace asked why he had blood on his hand. Harris told her that he cut himself on after dropping a beaker, and quickly shut the door in her face.