Synopsis
Hoping to find a weapon powerful enough to defeat Amara, Dean convinces Castiel, who is still possessed by Lucifer, to send him back in time to 1944 to the fated submarine mission that sunk the Hand of God.
Hoping to find a weapon powerful enough to defeat Amara, Dean convinces Castiel, who is still possessed by Lucifer, to send him back in time to 1944 to the fated submarine mission that sunk the Hand of God.