It starts mid-paced, mediocre, middle-of-the-road, like a harmless melodrama. Don't be fooled by the seemingly "storm in the teacup" style and scope. There are heaps of clues along the way. Some of them indicative, some misleading. Then, as the plot thickens, twists and turns explode one after another. The excellent execution of the story presents every twist and turn with explanation, all reasonable. Well done, director Wisit Sasanatieng.
Every characters other than the protagonists sis and bro look nice and give good first impression. However, they have dark side of their own, as revealed later. The exception: only 3 persons (the school bully, the rich youngster, and the futile husband) NOT look nice when first appeared, because the director portrays them that way, are not that bad as we anticipate. The most ugly of them all, is actually pure and innocent. These delicate arrangements are perfect embodiment of the idea that in our world it's hard to realize the whole truth, unless through a (worm)hole, of a past or even present event. Hence the title of THE WH⭕LE TRUTH (2021).
By the way, TWT is typically Thai cinema and a beautiful one. Asian horror movies tend to, IMHO, pay more attention on family value, good manner, morality, etc or even on introspection of their culture/tradition than the actual scary stuff. Therefore, TWT won't keep you at the edge of your seat. It doesn't intend to. Please look away if you prefer mindless killing, jump scare or gore.
