: Ben’s father, Ted, goes out to sea during a storm looking for proof of sea creatures, nearly drowning when he is knocked overboard.

: The episode introduces Tia as a formidable and less "sophisticated" threat compared to Ryn, culminating in a "knock down, drag 'em out" underwater fight.

If you're looking for discussion or details on there are several high-quality community and critical summaries available. Where to Find Discussions