Lawyers Speak the Same Language: Literally and Figuratively

In To Kill a Mockingbird, Scout mentions the following about her father's profession:

I've heard that lawyers' children, on seeing their parents in court in the heat of argument...think opposing counsel to be the personal enemies of their parents...and are surprised to see them often go out arm-in-arm with their tormentors during the first recess. This was not true of Jem and me...Mr. Gilmer was doing his job, as Atticus was doing his. [Mr. Gilmer's witness] had no business being rude to him of all people.

Despite Danny's arguments with Erin at the family dinner table, opposing counsel are generally quite civil to each other. Matlock's easy relationship with the police and (usually) with the other lawyers is more the norm than not. 

In one of Major Crimes's Christmas episodes, when the defense attorney says to his client, "I'm trying to think of an explanation for a dead body stuffed in a cello case under your bed--and it's just not coming," he is speaking on the same wavelength as Captain Raydor and Lieutenant Provenza.

The mother then produces a justifying speech about how she had to carry out a bank robbery and kill her accomplices so her son--a nice, friendly, average boy--could get into a private music school. "I did it for the world," she proclaims. 

Her lawyer looks at Raydor and Provenza. 

"You did say life," he says wearily. 

Everyone in that room--and the watching D.A.--thinks the mother is a psychopath. Why not the death penalty? 

But hey, the lawyer did his job!