walking the line on this

[kingston_123]

Sheriff Wydell was on the mission to catch the criminal. He found his brother George was dressed up like a cop and was living in the criminal's place.

Sheriff Wydell: I mean, this ain't your home. I got no choice, Johnny.
George: This here is my fate. I cannot rest until this whole thing is over. And I'm asking you, brother... kill 'em, John. End this s**t now.
Sheriff Wydell: I'm-I'm walking the line on this, brother. I'm walking the line.

What is the meaning of "walking the line on this"?
Source: The Devil's Rejects (2005)

 

[Skrej]

It's a reference to the idiom 'walk/tread a thin/fine line'.

Without more context it appears he's in a dilemma whether to arrest his brother or help his brother.

 

[GoesStation]

Sheriff Wydell [STRIKE]was[/STRIKE] is on [STRIKE]the[/STRIKE] a mission to catch [STRIKE]the[/STRIKE] a criminal. He [STRIKE]found[/STRIKE] finds his brother George [STRIKE]was[/STRIKE] dressed [STRIKE]up[/STRIKE] like a cop and [STRIKE]was[/STRIKE] living in the criminal's [STRIKE]place[/STRIKE] house/apartment.

See above. It's much more natural to use the present simple in this kind of narrative. You've been told this before; please follow this advice.

 

[Barb_D]

Kingston - you have been told this several times.
Please mask the profanity in your posts using * or some other technique. Some people are offended by coarse language and you don't need to explicitly write it to get the answer to your questions.

 

[Tdol]

We are happy to discuss topics that feature this sort of language, but please throw in a few asterisks so that everyone is happy. If you don't, your threads will end up being deleted.