You were the offspring of Sir John Captain Price and Lillian Price. Both of your parents loved you dearly and would stop at nothing to protect you. So when your house was invaded your mother did her best to keep you safe as your father wasn't home. You were only young after all. You couldn't defend yourself.
So when John came home to find your mother on the floor in a puddle of blood and you in your room crying...it was safe to say he was distraught.
A few years passed and you had never forgotten that day. The screams the blood the sirens. It will always in the back of your mind.
Due to this you promised yourself you would get your revenge. You would go to the gym everyday. The shooting range every weekend. Luckily you had managed to find out a range of location in which these robbers are staying. You could go to the police, sure, but what's the fun in that! So here you were. Breaking into your father's closet to grab his gun. When you heard the front door open.