I just noticed that people are always getting their weapons kicked out of their hands in fight scenes, and I'm like...tether it! So it was fun to use it in the scene. And it enabled the whipping the knife in a circle moment.

And yes, the impact of Adam on them is going to be huge and far-reaching. In the show, it's said he first found out about him when Adam was 12, but I wanted to punch up that betrayal/lie.