I really don't want to tell you, because it might be a spoiler....😅😅 But here it is...
I'm guessing she's the culprit because she had visit the mansion and maybe it wasn't David himself who dropped his license…. but she was(?)
I also think that the thing that killed Orlando can only be owned by someone with a medical background (so far only Oswin and Dave's mother)
But I haven't found out, what reason she used to do all these things
