I think the killer is not Tha Khuean but the abbot, he looks way too sus... Tha Khuean was at santi tham before him but the abbot came here '5 years' ago and his skin is looking way too healthy than that of a person who is living like a monk, it definitely him performing the life expectancy increasing rituals
Compared to the production value of the project it is good enough we can't expect cinema level quality from a small series with only 5-6 rentable locations in total
It wasn't great but it was definitely better than the standard that gmmtv had set with MGB... Especially Ciar's transformation and Methus' fast movements were good enough