Macbeth Prequel

On the night of King Malcolm's party...
You would make for a great king my son.
Never as great as you father. After all, you're the great King Malcolm
Oh stop, save that talk for the other nobles. Look, your brother is over there.
He is jealous of my future title. I am sure of it
He has been quite upset for some time now. Try not to think of it.
Who knows what he is capable of.
Calm yourself. Yes it is done.
Have you done it?
I hope it was worth it...
Good. My father has been drinking himself blind.
Thank you all for coming here today! As you all know, my eldest son, Duncan. Will soon become king.
May his life be long and prosperous. I believe he will be a great kin-
*Cough* *Cough
*Gaaaspp*
SEND FOR HELP!
FATHER!
IT'S POISON! THE KING HAS BEEN POISONED!
Stop! Don't move!
I'll find who did this to you, I swear it.
Take your mother, and leave this castle immediately! Before you are put to death!
No! It wasn't me!
Do as we say, now!
A few months later...
They wouldn't cut a deal with me.
Nevermind about you're weapons for now. Come look at this.
What is it?
Someone seems to have found a lead. They say they heard talks of a small boy who had helped your brother kill Malcolm.