Goofs

At the arraignment, Henry Semple is charged with four counts of murder in the second degree and 11 counts of attempted murder in the second degree. However, because the defendant killed more than one person in the same criminal act he should have been charged with four counts of murder in the first degree and 11 counts of attempted murder in the first degree.

New York penal code, article 125, section 27, subsection 8 states: "A person is guilty of murder in the first degree when...as part of the same criminal transaction, the defendant, with intent to cause serious physical injury to or the death of an additional person or persons, causes the death of an additional person or persons; provided, however, the victim is not a participant in the criminal transaction..."

A 16-year-old defendant - even one being charged as an adult - would not have been housed at Rikers. He would have been housed in a juvenile correction facility. Where he would have been incarcerated after sentencing is a different matter.

Some people believe that Henry Semple's psychologist violated privilege when she divulged her patient's name and basic psychological profile to Detectives Briscoe and Green, but she did not. The reason is that if a mental health professional has a reasonable belief that their patient is planning to harm themselves or others, they have an ethical, and legal, obligation to report that suspicion to the police. The defendant's psychologist strongly suspected her patient was the shooter, so she was within the canon of ethics and the law to divulge that suspicion to the police.

When the detectives are leading Howard to the car after "handcuffing" him, the actor is just holding the unlocked handcuff in his left hand.

When the "struggling" suspect is caught after a foot chase, he helpfully put his arms behind his back.

When discussing the defendant with Jack and Abbie, Dr. Skoda mispronounces the word "amygdala" (which is pronounced "ah-MIG-duh-luh" and not "ah-mig-DOLL-uh").