Just to add a very way off theory. It was interesting that they connected Lazarey's hand to "St. Aiden" on the cake. Only because he's an Irish monk, and I remember that in Season 1, when they are discussing Sark, who now turns out to be Lazarey's son, they mentioned that his accent indicated that he had spent a considerable amount of time in Dublin, Ireland. I wonder if Sark is somehow connected to St Aiden.