Yeah I thought Phil looked younger in those pictures too. He looks like he hasn't slept in days though.
I wouldn't be surprised if it's made to look as if Peggy dies in the fire but in the next scene you see Peggy strolling around with a smile on her face in Barbados.
If she does die though I can see her being stubborn to leave the Vic. Like the Captain on the Titanic wanted to go down with his ship, Peggy wants to go down with the Vic. I hope I'm not right.