This season capitalises fully on the groundwork laid in the previous one. The pacing is faster, the jokes hit harder and the arcs are more focussed.
It also gradually introduces more actual grownups to the plot, and as the adult world continues to come into the picture, the tone simultaneously grows darker bit by bit, which I found a nice touch.
But for the most part it was simply a cavalcade of hilarious misunderstandings and coincidences and I was glued to the screen from start to finish by all the fun, suspense and excitement. Quality storytelling on all levels.