Hoping to find a weapon powerful enough to defeat Amara, Dean convinces “Castiel,” who is still Lucifer, to send him back in time to 1944 to the fated submarine mission…

The repercussions from Caspar’s murder are felt by Frank and the Vinci Mayor’s office. Ray and Ani are involved in a close call with the killer.

Ben Caspar’s autopsy reveals the gruesome details of his demise, and Ray and Ani wonder if it has anything to do with his fondness for prostitutes. Meanwhile, Frank looks into…