Answer:
Draco’s dad being a hundred times worse than Draco
We meet a lot of great new characters in Chamber of Secrets, and some not so great. If we thought the oleaginous ways of Draco Malfoy were as detestable as they got, it’s nothing compared to his dad, Lucius Malfoy. Upon meeting Lucius, there were instant bad vibes. Lucius is why Draco is so evil: He doesn't want to make his dad mad at him...
The mystery of the Chamber of Secrets
For Harry’s second year, things turned very dark very quickly when Harry was tormented by a voice in the walls, and by the thought of a horrific monster that was Petrifying Muggle-born students. Chamber of Secrets was basically a horror movie for Harry. The eerie message ‘THE CHAMBER OF SECRETS HAS BEEN OPENED: ENEMIES OF THE HEIR, BEWARE’ message smeared across a wall was a genuinely haunting image, especially for a little 12-year-old just getting used to all this magic business. Imagine yourself in that spot, huh?
Tom Riddle’s diary
Harry had Tom Riddle’s diary; a mysterious tome that wrote back to him as the voice of Tom Riddle, a student that conveniently knew a lot about the Chamber of Secrets. Kind, knowledgeable and always ready to listen, Harry became quite friendly with the talkative book, but unknown to him, so did a young Ginny Weasley, which spelt disaster when we found out that this Tom Riddle fellow was not just a well-meaning agony aunt. Tom was *shock* a bad guy in the book who was the best at manipulating people...
But I like the prisoner of Azkaban more because it has Hermione punching Draco. He deserved it.