Who was at the door trying to get into Nathan and Haley's house and leaving the doors open places in season 9? Did they ever say?

I don't think they ever said, but I just assumed it was Clay and his sleepwalking.

Dan? Because of episode 5 Season 9?

HALEY: Well? Answer the question, Dan. bạn đã đưa ý kiến bạn Mất tích everything in the fire, so why do bạn have this? And all that money... why do bạn have that? Was it not an accident? Did bạn start the ngọn lửa, chữa cháy yourself? Oh, my God. bạn did! bạn started the fire! I trusted you. I let bạn into my home. I defended you, and bạn lied to me, and bạn took advantage of me! And the doors... the doors here and at the cafe. Was that you, too?

DAN: Haley, will bạn let me explain?

HALEY: What else are bạn lying about, Dan? Where is Nathan? What did bạn do to him?

It was Dan Scott, Nathan's dad.