What Happen Next?

I think the thing that will happen is Max will scream as loud as he can and punch his dad, then, Grim and Gram will come, but his dad already gone. Next morning, Max tell the thing that happen last night to Grim and Gram, they think for a long time abut who will the guy that last night come be. At last, Max said, " Maybe is dad he's coming home, maybe he already get out from the jail." Grim and Gram still thinking, they think it was make sense, too. So, they think it was Max father.