that we've closed all over the country.

破获的案件
We do have reason to believe

我们有理由相信
that he's been stalking each member of this team.

他一直在窥探我们所有组员的行踪
So he's extremely mobile and has the time

他具有极强的机动能力
and the means with which to get around.

有时间和方法实施行动
And the intelligence to cover his tracks and remain evasive.

并且能够隐藏行踪而不被抓获
We think it all started

我们认为
15 years ago with a case we had in Pittsburgh

此事开始于15年前我们在匹斯堡
that involved the death of 4 nurses.

处理的一起四名护士死亡案
That killer, Jack Lee Kemper, was apprehended,

该案的凶手杰克·李·肯珀被缉拿归案
and he was recently executed.

最近被处以死刑
Because the most recent exsanguination victims were also nurses,

因为最近几个被放血的被害人也是护士