Mike Roberts is dead. His body was found on top of a car after being thrown out of the window of his office building. John Irvin approaches Sipowicz and tells him what Roberts warned him about. So the detectives begin to see if they can build a case around Cullinan, the rich man that John punched out. Medavoy looks into a book that Roberts was writing for clues. Kirkendall volunteers to become the bait for the trap they lay for and catch Cullinan in. Cohen isn't delighted with her performing this task, which she feels is just a part of her job. She tells Russell that she isn't going take the crap from him, so they are through. As the squad waits for the lawyers to work out the details of the Cullinan bust, Medavoy reads more of the notes of Mike Roberts, featuring Donna Abandando.