For Part 1, before the Stone Mask and Hamon shenanigans, you could use "The Good Son"

Summary from TvTropes: "It is about Henry Evans (Culkin), a psychopathic kid terrorizing his cousin, Mark (Elijah Wood). Mark tries incredibly hard to convince his family that Henry is psychotic and evil, a fact that should be noticed even if you're three miles away. Mark continually tries to stop Henry from getting worse, only to have Henry make him look worse at every turn…"

Me: "which one…"
My conscience: "All of it!"