Steve's greatest problem is not the trial itself even though it's certainly stressful and difficult the real problem in his head, as he tries to figure out if he's truly a monster.
Lorelle was in the store when the robbery occurred and during that time she saw James King
She's all about business as she talks to Steve and sees no need to believe her clients, or even to believe them her job is only to prove their innocence to a jury.
Sal Zinzi was out on Riker's Island looking for a chance to get a break from his jail cell, as well as Island predators.That chance came in the form of Wendell Bolden, who gave him some facts about a drugstore robbery/murder that went down.
King is a loser whose life revolves around the next getover for easy cash. He knows what this that someday he'll get caught. So even if he actually Mr. Nesbitt doesn't matter so much.
Mr. Sawicki showed Steve how to use a camera and make a film, he mimics on the page as he copes with his traumatic trial experience by changing it into a screenplay. In the middle of an extraordinary experience, Mr. Sawicki reminds Steve of his humanity