I think Sirius is dead--behind the veil. I still think Harry or Dumbledore could have used the Time Turner to save his life. Why didn't they?

Harry still has pieces of the mirror Sirius gave him. Remember Harry was supposed to look into it to talk to Sirius. I wonder if Sirius will come back to talk to Harry through the mirror later on, when Harry needs him the most.

Dumbledore said that help would always be given at Hogwarts if anyone asked for it. Maybe Harry just needs to look in the mirror and ask Sirius for his help.

Whaddya think?