I just finished watching and it was indeed a great episode. I had a thought--since Nick and Max both had cuts and bruises, maybe one of them came upon Trent fighting with the other and stabbed Trent to save their life. But yeah, I agree, it's not Caroline. I think she paid or tried to guilt Trent to leave town.
Anyway, that's my 2 cents worth.
Anyway, that's my 2 cents worth.