Topher Zia won't be killed or anything so dramatic, at least not on screen. According to Deadline, the actor had an option in his show contract that allowed him to opt out of returning if he wanted to. And, needless to say, Leung is making use of that option to seek out other job opportunities.
In the end, Jordan loses the baby and TC is upset that he was not with her when this all happened. At the end of Darkest Before Dawn, TC proposes to Jordan but her answer isn't revealed in the season 2 final. but is revealed in the first episode of season three of the night shift.