So, after watching the rounds, I think I know the story but I might misconstrue stuff up: Peter is abusing Freya and Otto knows this and doesn’t like it. So he goes to Mr. white for a plan to get Peter out of the way. The fire is set up to look like it was Peter’s fault, but no one could predict Freya running into the flames. I’m guessing the plan didn’t work out as one hopes and Mr. white wants revenge or something because he writes a letter to Otto that maybe exposing the truth that he set up the plan to eliminate Peter. Thats my guess anyways. Who knows. If this is true, then his last name fits him well