Knowing what i know makes me think the duchess his planning all those attempts at the royal family like i know she is the serial killer (Haven't looked at other spoilers) cause she is from there or at least at the og duchesses funeral the dad introduced her saying he met her during the campaign there so
Wild guess but . . . . . I think that she also was behind the death of the OG ML's mother and father. Her death kind of sounded like being slowely poisoned, just like the victims. I also find the medicine the ML takes to be kind of suspicious...
Knowing what i know makes me think the duchess his planning all those attempts at the royal family like i know she is the serial killer (Haven't looked at other spoilers) cause she is from there or at least at the og duchesses funeral the dad introduced her saying he met her during the campaign there so