This guide will let you know how to find the Moth in the Grand Staircase in Hogwarts Legacy.
The first thing you will need to do is to use your Lumos spell on the picture under the staircase.
After that, head up the stairs and just look at the paintings on the wall, it kind of blends in a little bit. You need to grab it using your Lumos again, then run it on down and you’ll get experience and one of your challenge pages.
