Cairn (The Lost Boy)

Mr Cairn was a French teacher at Park Vale school. Maria Jackson was supposed to be having double French class with him when she attempted to go to see Luke Smith. Only Clyde Langer was able to, as he hadn't been caught. (PROSE: The Lost Boy)

Behind the scenes
The same scene with Mr Cairn was also shown in The Sarah Jane Adventures. However, his name wasn't given. The photo shows Mr Cairn in the series. (TV: The Lost Boy)