 Dararai wanted to blackmail Sethee with the photos or tell Usa and as a result Sethee met up with Dararai, drugged her drink, injected her with a paralysing liquid and chopped her to pieces (in the hidden room that Chon finds).Chon is about to tell Usa that her husband has killed Dararai but while at her house he is again attacked by Dararai's ghost who says she will kill his sister, enraged Chon stabs her with a pole in front of Usa and Sethee's daughter May.After seeing May (who's scared and terrified) he leaves to find his sister.