4John, you got the right man. 
6Chief! What made you do such a terrible thing?
4It was a long time ago. See, your father used to be a colleague and a close friend of mine. He had a bright future in the Department just like I did. Then one day, the Department Chief position became vacant and he became my competition. Unfortunately, your father was a far more qualified candidate than I was. However, since I wanted the Chief position so badly, I asked him to concede several times. But being also a man of great ambition, he refused. After that I lost my patience and temper That night, I set your house on fire. After I regained my senses, I deeply regretted my actions and I actually thought I was going crazy. I was desperately looking for a way to seek forgiveness from your father's spirit, so when you signed on as a member of the department I thought it was my opportunity to finally set things right. I decided then and there that I would make you the best firefighter you could be. I thought if could do that, surely it would should lessen my guilt if only by a little. I had to figure out how I could make a newcomer like you a veteran firefighter in the shortest period of time? I came up with the idea of sending you the letter, committing the series of arsons and giving you the hardest tasks to complete. Believe me when I tell you, I am truly sorry for all of this. Now, it's time for me to pay for what I have done. Please take me to the police. I don't deserve my freedom.
6I see. So that's what happened. (Sigh). I'm almost maddened by my hatred for you. I can barely stop myself from taking your life for what you did to my family. However, since you have tried to repent in some way, you can have your worthless existence. But, no matter the reason behind why you did this, you have caused more suffering for others only to help yourself. I believe you will face the harsh punishment you deserve.
4John, you'll be an excellent Fireman.