This is a clip from the Dexter episode "Road Kill." In it, the Miami PD tries to determine the best way to catch a killer.
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In this clip from Dexter, our favorite killer visits Trinity's home. He witnesses a few "cracks in the perfect family."
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Dexter Season 1 Quotes

[narrated, in reference to Doakes] My devil danced with his demon and the fiddler's tune is far from over.

Dexter Morgan

The only real question I have is why in a building full of cops, all supposedly with a keen insight to the human soul, is Doakes the only one who gets the creep from me.

Dexter Morgan