Audio problem: When the trio are on the Hogwarts Express, we hear Harry say "What was Draco doing with that weird looking cabinet and who were all those people" but the subtitles say it was Ron who said that.
TheMrSnape
29th Jan 2010
Harry Potter and the Half-Blood Prince (2009)
15th Jan 2010
Harry Potter and the Philosopher's Stone (2001)
Visible crew/equipment: When Harry, Ron, and Hermione are struggling in the Devil's Snare, a puppeteer can be seen on the left of the screen, working at least some of the masses of tendrils. (01:52:00)