I think that was Brona's necklace that Ethan held to her forehead. Very interesting.

I loved the scene where Ethan was showing Victor how to use a gun. A lighthearted, brotherly scene in an otherwise intense show.

It must have been very tiring to film this episode for Vanessa, she was always flinching or in pain or screaming to some capacity. This show is excellently done. It conveys emotion very well. Very believably.

A prediction for the future of the show, I could be way off:

I think Ethan is going to find out about Victor's idea to make Brona immortal. And he'll be okay with it. He knows she's dying and would like her to live as well. This could make for some very intense scenes between Ethan and the creature in season two.