Respuesta :
I’d say professor? they are intelligent and could easily think of a well thought out plan to murder someone but also the actress could be a best bet too because they would least expect it to be her so she would probably ultimately be their last choice but because she is so famous she has connections and could hire a hit man to commit the crime. I feel like the butler would be to easy to assume because he knows how to handle knives and stuff like that so why would he do that if he could be easily caught? I think the best answer is the actress