Plot hole: They speak of sending a high school shooter to state prison. But if he's under 18 surely he'd have to be held in a juvenile facility until he's old enough.
Suggested correction: This is incorrect for the time period. Until recently, 16 and 17 year olds who were charged as adults could get sent to State prison with adults. 2015 is when New York State decides to house 16 and 17 years olds in State prison in separate facilities.
Plot hole: At the end of the episode McCoy and his team tape a conversation between Melissa Corbin and her mother Lorraine in order to record her admitting to murdering Alan, her first husband. Trouble is, she says nothing incriminating. The closest they get is Lorraine asking her why she killed Alan, and she replies "You didn't have to sleep with him." That means nothing, and in fact Lorraine says absolutely nothing of any legal significance during the entire conversation.
Plot hole: During the beginning moments when the couple go to the top floor, as they are going to the roof they discover a lot of smoke on the penthouse floor which leads them to seeing the charred corpse in the hallway. The only problem is that with the smouldering body wouldn't it have set off the smoke alarm or fire alarm? The building is a very posh apartment block and they are on the penthouse floor making the likelihood something as basic as a fire alarm would be triggered. The killing was more in the heat of the moment and most likely the killer burned the body then and there making the probability of a lot of fire on the floor very high. Even if the woman had been burnt somewhere else and brought back to the floor there is no way the smoke around wouldn't at least have set off the fire alarm or sprinklers.
Plot hole: Price suddenly asks for a recess while questioning the defendant and exits the courtroom. It is dark outside but courts would not be working in the evening during a regular session. Furthermore, the episode was not set in the winter since no-one was wearing coats during the episode.