Draco Malfoy
A further link between two vanishing cabinets, one in the school and the other in Borgin and Burkes in Knockturn Alley presumably works until "Chamber of Secrets" when Peeves (persuaded by Nearly Headless Nick) smashes the Hogwarts cabinet. The passage is reopened in "Half-Blood Prince" when Draco Malfoy fixes the cabinet. This passage is not shown on the Marauder's Map as it is not part of the castle itself.