自問自答，結果是龍紋身女孩美版，
那時候可能是查了挪威版所以沒看到。
而我之前的描述並不正確，小防雷頁後解答。
※ 引述《benpig (壓力..　　　　　)》之銘言：
: 至少五年或甚至十年以上的片子，只記得兇手在某次作案的時候，對著被害人說，
: 「你們這些人就是因為禮貌，因為我彬彬有禮，所以就讓我進來你們家了。」
: 不曉得為什麼一直以為是龍紋身女孩，但查了一下似乎不是。
: 一些其他印象：
: 1. 兇手是男的
: 2. 講那個台詞的時候有廚房場景，廚房記得是美式連著客廳的那種，
: 類似這個 https://goo.gl/4PY6Eb
: 請問有人知道是什麼片嗎？謝謝。
場景是兇手發現似乎有人入侵他家中，並看到主角，
所以邀請主角進入自己的家中。對白：
兇：Mikael. Hi there. Your evening stroll?
主：Yes, that's right. I ... How are you?
兇：Good. I stopped by the hospital on my way home.
Henrik asked me to ask you something.
主：What was that?
兇：Come on in. I will make you a drink.
主角就進去了！
（快轉到兇手準備發主角便當之前的演說）
Let me ask you something.
Why don't people trust their instincts?
They sense something is wrong.
Someone is walking too close behind them.
You knew something is wrong.
But you came back into the house.
Did I force you? Did I drag you? No
All I had to do was offer you a drink.
It's hard to believe that the fear of offending can be
stronger than the fear of pain.
But you know what? It is.
And they always come willingly.
And then they sit there.
They know it's all over just like you do.
以下千字對白省略...
不好意思，之前提供錯誤資訊讓大家燒腦。