I recall watching this documentary on Channel 4 in the UK years ago, sometime around the early 2000s when I was roughly ten to twelve; it stuck with me. I’m counting this as a fresh viewing because I don’t have a clear recollection of seeing the whole thing back then. It's unsettling, captivating, impactful, and occasionally irritating—definitely worth watching, though I realize why some people might find it hard to get into, as other viewers have pointed out. Grace Quek (also known as Annabel Chong) is an intriguing person; she’s smart, and her character holds the audience's focus.

Source on TMDB