This second episode of the new season has Imo and James observing that the 'Harry Potter' franchise is maturing - demonstrably so in the rapid ageing of its adolescent cast (getting a razor soon, Potter?) They discover not only one plot/world-shattering device in 'The Prisoner of Azkaban' (2004) but two; why the 'Goblet of Fire' (2005) was a trial too tedious for one of the critics, and how Michael Gambon's performance as the formerly serene Headmaster suggests that Dumbledore's certainly got piles. The misadventures continue!