Vikings season 4: Episode 15, the synopsis and promo pictures unveiled!

In a few days, History will broadcast episode 15 of season 4 of Vikings, for which we propose you to discover the synopsis and the photos promo!
Painful images! As we recover from the death of Aslaug, in season 4 of Vikings, on which Alyssa Sutherland returned , promotion continues for the series of the American cable channel History . In a few days we will find out episode 15, titled “All His Angels” , which should not be missed twists, as reflected in the synopsis. Indeed, it shows that “Ragnar Ivar and plotting against the Saxons and reach a new level of understanding” . Could it be that the Viking king has an unexpected surprise for the moment when King Ecbert will hand him over to King Aelle? It seems hard to imagine that Ivar would have time to reach Kattegat and return with men to save his famous father before it was too late. So, will we find out that Ragnar has a plan with other individuals encountered during his absence?
The promotional photos of this episode are not there to reassure us and it is not to say that they are painful to see! We see King Ecbert displaying a strange expression. Would he regret his decision to deliver Ragnar? On another shot, we discover King Aelle praying, demonstrating that religion will always have a prominent place in the series. More dramatic, we see Ragnar in his cage, then face King Aelle, kneeling and held by the neck, like a wild animal! After episode 14 of season 4 of Vikings, for which we offer our criticism , it’s a heartbreaking chapter that we should see. Do you think that Ragnar’s death is preventable?