来自《犯罪心理第5季第8集第8集》

Indicates a major psychological break.

表示凶手遭受了重大心理打击
How is it escalated?

为何说是逐步升级
The timeframe between kills

凶案发生的时间间隔
Has gone from a year to just 3 days.

从1年缩短至3天
For the unsub something has dramatically changed.

对不明嫌犯而言他一定发生了巨变
Some kind of major external stressor forced this unsub

一定是某种外部应激源
Into feeling the need to kill again without any remorse.

迫使他抛开悔意产生杀人欲望
Mirror neurons and stressors

与不明嫌犯过去紧密相关的
Relating to the unsub's past

镜像模仿和应激源
May have triggered this

可能成为导火索
The strongest of which is smell.

从而酿成这起惨案
That sound.

那声音