Kate struggles as a new drug is brought onto the market, namely because she's given dominion over it.
Jon continues to struggle with his attraction to Kate and his need to remain good, but when things come to the boiling point, he has a decision to make that will change everything. The tension between Kate, Jon and Marcus starts to dissipate, and new emotions emerge - comfort and peace.
With too many players in the game, someone has to go. The question is who, and even more so - how?