We may have an answer to the Brandon Lee mystery. Readers will remember the young oldie who masqueraded as a pupil at Bearsden Academy. But why did he really do it? One Glasgow French teacher thinks he knows. "It's quite plausible that this was a pilot scheme for plain clothes inspectors and undercover inspection teams. If hit squads are on the cards, I'll be checking the birth certificates of all my fifth-years. You can't be too careful."