Most serial killers are unable to control their own impulses,

连环杀手大多无法控制杀人的冲动
but some seem to be able to self-regulate.

但有些却能自己控制
It's like they have an on/off switch

就好比他们有个开关
that they themselves can control.

自己能控制住
The secret of the head in the capsule

时间舱里的那个头颅
was probably enough to sustain him during this dormant phase.

满足了他的欲望让他在这些年间克制住自己
And when the time capsule finally was opened,

而一旦时间舱被人打开
it was like an alarm clock going off,

就好比闹钟作响
a wake-up call to resume killing.

然后翻身起床继续杀人
He witnessed the fear it instilled in the town

他目睹了恐惧慢慢渗透全城
and he wanted to keep that panic going.

而且想让恐慌继续下去
He's collecting heads again for a purpose.

这回他收集人头是有目的的