CSI: NY Season 4 Episode 10

Mac tells Det. Brennan that he grew up in Chicago. He seems to be emotionally and physically detaching from the city not phrasing it something like: I'm from here or this is my hometown. He doesn't mention if he has family in the city either.

Drew's plan was for the subway to crash and only leave Danny to save Mac and hence be shot and dead in the attempt. If it would have worked, it would have destroyed Mac's entire team, his family somehow.

It is pretty sure that Drew wanted to destroy all of Mac's "family", but there was no way for him to positively know they would all get on the subway except for one.

Mac is 44 years old.

The abandoned City Hall subway station exists for real. Train #6 used to loop through it after making its final downtown stop and had to turn to start the trip back uptown.

Mac decides not to act according to procedure and doesn't shoot to kill Drew. He just hurt him in the arm. He doesn't want to be responsible for any more deaths.

Goof: Stella realizes the 333 stalker is Drew because the piece of the puzzle that she found under his chair had blue crosses (it belongs to the puzzle they haven't received yet) instead of green ones. However, Stella goes back to the lab and places this piece in to the puzzle to complete it.

The real puzzles we see in this episode never came with colored X's; instead they were printed with red dots on the pieces you were supposed to remove. This fact was changed in order to be able to realize who the real killer was.

The 'anthrax' view in the microscope is the same used in episode 2x16, Cool Hunter, where Hawkes examines a suspect's DNA sample.

The Chicago detective asks Mac for his prints and DNA for elimination purposes but I would expect that they will be on file considering his job.

Note: It's true that they would be in the NY database and the Military database because of his history, but they were in IL so unless the Chicago PD had access to both of those databases or Mac's prints were in the Federal database, they still would have needed elimination samples. Also, DNA is not something that is normally stored for PD employees.

Goof: In the flashback to 30 years earlier, Bobby Toole can be seen holding several twenty dollar bills in his hand. Based on the design of the "20" in the corner, it appears that the bills are from the 2004 series. Thus, the bills from the flashback would not have existed in the 1970s.

We learn the significance of 333 being the room in which Mac could not shoot the man assaulting his friend's brother when he was young. As Mac said in 4x01 Can you hear me now?: For some, the greatest sin is to turn away and do nothing. Mac's sin is that he was unable to act. He was unable to pull the trigger in order to shoot Bobby Toole and save Will's life.

Goof: They should have a reference sample of Drew's prints and DNA already; Drew touched the puzzle with his bare hands in the previous episode. To exclude him from the investigation, Stella would have asked for his prints.