Theories on the Ending?

I'm watching the drama on Netflix, but reading ahead on recaps for those who watched elsewhere. I'm a little (no, a lot!) nervous for the ending, given the foreshadowing of a host murder. I'm a little worried the writers might use this plot point to solve the issues arising from the complicated main lead relationship. 

Thoughts? I'm also hoping others might offer a rosier picture than what I fear.