There's a pretty amazing recurring joke, where one of the main characters is in great distress and needs some information from somebody, and that somebody insists on giving that information at the end of a long, circuitous story, which causes the distressed protagonist to urge their interlocutor on in an increasingly aggressive, practically-Pythonesque manner. Some of the twists earlier in the story are pretty great, but the ones at the end don't seem to rise as high, and Radcliffe certainly takes her time tying it all up, so the gag seems almost like a self-conscious taunt by the author...