Knockturn Alley is a location leading off of the more savory Diagon Alley, Knockturn Alley is a dark and seedy alleyway in London to which muggles have no access, and which is frequented largely by Dark Wizards. Many of the shops in Knockturn Alley are devoted to the Dark Arts; the largest is Borgin & Burkes, which sells sinister and dangerous objects.
