The Case of the Cat Show Corruption

This time, Argus Filch has a reason to be grumpy. Someone has nobbled Mrs Norris - shortly before an important cat show. And Argus just knows who that someone is - Lucius Malfoy. 'Cos it's what a bastard like Malfoy would do, innit? But what chances has a Squib against a Malfoy? Fortunately, Minerva McGonagall, Spinster Detective, takes up the case.