knowing that it'd be 25 years

他知道要过25年
before people would know what he'd done.

人们才会发现他的杰作
He always spends a great deal of time

他总是花费大量时间
meticulously planning his kills.

精心设计每一次凶案
So look at professions that would reflect this type of mindset.

所以需留意一下具有这种思维的专业人士
Artisans, uh, those who work long hours in solitude...

比如手工艺人那些长时间独处的人
perfectionists.

还有完美主义者
How did this guy keep from killing all those years?

这么多年来他怎么克制住自己不去杀人呢
We call it self-initiated predation cessation.

我们称之为"自发性终止行凶"
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