then Daryl's presence would have come as a surprise to the unsub.

那么达里尔的出现对嫌犯来说一定很意外
Making him a victim of circumstance.

那他就是不幸受牵连被害
The question is, how did he learn about 3 separate women

问题是他是怎么认识生活方式完全不同
that lived 3 completely different lives?

且互不认识的三位女性的呢
Your report mentioned

你在报告中提到
you found rust fragments in the victims' stomachs.

你在被害人的胃中发现了铁锈
Have you been able to determine if they were from the knife?

你查清那是否是来自刀具上的了吗
Either that or from the other object.

要么是刀具要么是另外一个凶器
Other object?

另外一个凶器
The assailant used two weapons,

凶手用了两种工具
one to grip and the knife to severe the tongue.

先用工具来夹住舌头然后用刀割下
Something like pliers.

类似钳子的工具