to add on to the serial killer thing,, FL discovered that the victims are actually being poisoned and then made to look like strangulation victims. so really you don't need strength to be taking out the victims. the knot is a cordina knot (I forgot the country name ok I'm sorry if this isn't right) so it could be done by anyone from that country, which the step mother is from. the people that were being killed hold no importance to ML except for briefly coming in contact or being around him. ALSO, if the Duke is blamed for the princess' death and he is arrested the step mother gains control of the house.
I have other thoughts but it's a lot lol ofc it could be anyone! even ML I guess
I agree with the comment on here that says she's kinda dumb to be a prosecutor. it WOULD have been MUCH better if like they said she was just a true crime enthusiast because so far she has done really poorly.
first off, it was never said the ML is the serial killer but she immediately branded him as one and started finding evidence to pin on him. To me, that's already a bias and clouds your mind to so many possibilities and clues that can be overlooked because your mind is looking for clues against a specific suspect, not others.
second, she did end up realizing that ML could potentially not be the serial killer but again, she already has a bias so even though there are other possible suspects her mind always goes back to ML. ML may fit the "description" but everything he has done so far would paint him as someone who has nothing to do with the crime imo. she's always reaching with her "theories"
third, I think the most likely suspect and possible criminal and the one that makes the most sense is the step mother lol she is from cordina or whatever. if she were a spy she would gain favor to take down a duke household. she could easily be plotting everything to where the Duke looks guilty af, everyone he comes across, so that he is eventually suspected and incriminated. she comes from a "humble" background, but that's an easy way to make everyone look down on you and be less suspicious as well as not investigate too deeply. she made connections with the queen. if she befriends the queen she can advise her on certain things, see whats happening straight at the top and report back. I also don't believe her green tea bitch personality lol someone beautiful and kind doesn't turn up on the day of a mothers funeral and announce her presence. she's a fuckin snake.