I started again because my blood on the ice was glitched and I couldn't kill the murderer so I started again and now the quest isn't showing up so I did all the things you have to do to fix it, they didn't work so I checked again and the only way to fix it is starting again. If you have any help please tell me.

This could spoil it for you:
I have searched the house with all the bones and stuff and I stole the journal from the murderer nothing happened!