We're getting the marks back from the semester one exams now.
I received a phone call from a woman who runs a module in, shall we say, Statistics. It is a module on Nazir's course, but not one he'll have done yet - he'll be doing it in semester two. She had found an answer book with "Marketing" written on the cover instead of Statistics and had looked into the situation.
Turns out that Nazir, apparently under the impression that he was at his Marketing exam (which wasn't even on the same day), showed up to the Statistics exam instead. He missed the fact that it said Statistics on the paper, missed the announcement at the start of the exam welcoming students to the Statistics exam, and sat there for two and a half hours attempting one question. He never made it to the Marketing exam.
I don't even want to know what his family are going to make of that. I'm leaving it to the course leader to sort out.