Lessons in Cracking the Deadly Code by Charlie Cochrane

St Bride’s College is buzzing with excitement at the prospect of reviving the traditional celebration of the saint’s day. When events get marred by murder it’s natural that Jonty Stewart and Orlando Coppersmith will get called in to help the police with their inside knowledge. But why has somebody been crawling about on the chapel roof and who’s obsessed with searching in the library out of hours?