CHICAGO—After sending a campus-wide email that a student has gone missing since accidentally boarding the Platform 9¾ train at Union Station, Northwestern University has discovered that this report was a hoax after the student was found sipping piña coladas and re-reading the fifth Harry Potter novel at the Union Station bar. “It was not a bonafide instance of magical kidnapping,” said a policeman, using his strongest diction possible. Widespread concern was felt because of many details in the email. The