Talk:Volume 6 Trailer/@comment-37221409-20181017150328

I have a radical theory. On Salem's orders, Tyrian kills Mercury, and that's what gets Emerald so freaked out.

Think about it. After the Battle of Haven and the death/disappearance of Cinder, Mercury and Emerald will likely think to themselves that they no longer have a stake in Salem's war and want to leave, possibly forcibly. Salem, never one to underestimate the usefullness of others, will have Tyrian kill Mercury, likely in a savage or brutal way, in order to terrify Emerald, the more valuable of the teens due to her Semblance, into compliance. It would explain why Mercury is noticeably absent in the trailer, as well as why Emerald was so terrified when Tyrian approached her. It could be that, when Salem is glaring at her, Emerald could be staring at Mercury's slaughtered body. It also explains Salem's words at the beginning of the trailer. Spoken just after Mercury's death, they would be directed at Emerald, warning her not to put her personal ambitions, whether they be escape or revenge for Cinder, above Salem's own, lest she end up as Mercury did.