InOccupied Francein 1943, a Woman of Letters named Delphine Seydoux kills a Nazi general and steals a powerful artifact from him. In the present, Sam discovers that the artifact is a Hand of God and possibly has the power to destroy Amara. Sam bella and Dean call upon Castiel for information, not knowing he is possessed by Lucifer who has regained control of Hell but lacks the power to defeat Amara. As theBluefin, the submarine carrying the Hand of God to America sank, Dean has Lucifer transport him into the past to before the sinking, but special warding keeps Lucifer out. Dean locates Delphine and manages to convince her of his mission, but a German destroyer attacks theBluefin, commanded by the German general who is a member of the Thule Society. In the present, Sam and bella finds a spell that will allow "Castiel" to remove the warding and offers to use his soul to power it. Lucifer reveals himself and nearly kills Sam and bella , but Castiel manages to regain control long enough to stop them and inform Sam of the situation and tells bella he loves her she said it back to him . Unable to defeat the Germans, Delphine unleashes the power of the Hand of God, obliterating theBluefinand her crew as Lucifer returns Dean to the present. Lucifer reveals himself to Dean and attempts to use the Hand of God, but discovers that its power is expended. As Lucifer is distracted, Sam and bella banishes him with a bloodsigil. Dean promises to capture Lucifer and free Castiel who he refuses to believe willingly agreed to possession and turn to bella ran the back of his left hand on her left cheek told bella to come with him for a while if she miss castiel so much he won't hurt her she agress just for a while and told dean and sam to look afther grace . Sam informs him that while the wreckage of theBluefinwas never recovered, the German destroyer was found, sunk by the Hand of God, leaving Dean contemplating the sacrifices committed by theBluefinand her crew.