In Ben Stone's office, Allison Janney's character puts down a photograph Stone gave her. When the camera angle changes to Stone, she is holding it again. When it changes back to her, it is back on the desk.
The box of ammunition Logan finds in the suspect's apartment says "50 center-fire revolver cartridges". Yet Logan says the shells inside the box are .32 Auto's, which is what the murder weapon was too. A .32 Auto is a semi-automatic, not a revolver.
The CSU tech tells Logan and Briscoe that he found a shell casing under the sewer grate and that he thinks it's a .32 Auto, which implies that he isn't sure on what caliber the casing is. Yet there would be no ambiguity regarding the caliber of the shell casing as the brand and caliber is always stamped on the base of the cartridge.
When Nikolai Rostov is arraigned the only charge that is read against him is murder in the second degree. Yet at the time of his arrest he was found in possession of an unlicensed, loaded handgun. So he also should be charged with criminal possession of a weapon in the second degree, a class C felony. It would make sense to charge him with this as well as it would not only increase his chances of being held without bail, it would also allow them to keep him in custody if for some reason they weren't able to maintain the murder charge. If they did have to drop the murder charge, for lack of evidence for example, and they had no other pending charges against him he would be free to go. However since CPW 2 is a class C felony that would mean that they would have plenty of time to find additional evidence and build a case against him for murder as a conviction of a violent class C felony has a mandatory minimum sentence of 3 1/2 years. Plus since this man is a known member of the mob he almost certainly has a prior criminal record meaning he would face a lot more than the minimum time, a class C felony can have a maximum sentence of 15 years.