Other mistake: When Adam shows Mac how Suspect X finds her clients online, Mac comments that he's thinking of phishing scams, but in the closed captions, the word is mistakenly spelled "fishing."
Continuity mistake: When Mac chases Suspect X into the construction site, X takes cover behind a pillar and fires her gun at Mac with one hand. In the next shot she's suddenly out in the open, holding her gun with two hands. (00:37:55)
Chosen answer: Probably to broaden the scope of the show's plot and give the audience a chance to see the characters in a different setting, People act differently at home from the way they do at their workplace. By the ninth season, the characters would have become overly familiar and predictable. It gives the writers a chance to do something different with them.
raywest ★