When Emily Hoyt is first identified it is stated that she is 18 years old. When the defendants are meeting with the district attorney, Serena says directly to Emily "the victim was 24, only a year or two older than you"
When the detectives interview the produce stand owner, there's a blonde with a ponytail unloading a truck in the street behind the detectives. The camera reverses to show the owner continuing a sentence, and the blonde is behind her now.
The FDNY battalion chief in the opening scene has a goatee beard. FDNY regulations prohibit beards of any kind for active duty members, especially battalion chiefs whose specific job it is to enforce such regulations.