Got to watching 19.
Now that was pretty dark, especially with Moeka going berserk for her phone, which was indeed quite disturbing. Whether Okabe's actions were right or wrong, I don't want to delve into that too much. But he does have his circumstances, especially since not only Mayurii and Moeka's lives are at stake, but the danger of the future becoming a dystopia as well. That's not to say I watched this episode with a breeze. While Moeka's not innocent, I felt really sorry for her and the way she lived her lived her life... alone.
That aside, I'm getting goosebumps on thinking of what will result in the next episode followed by Okabe being told the location of the IBN by Moeka(meaning he won't have to go through the trouble of finding FB), and what the final story arc of this awesome series will have in store for us.