"When a crazed gunman named Larry Shepard open fires during a rally with State Senator Celeste Kelman, seven innocent people are killed including the Senator. With the help of modern technology, Detectives Morales and Jaruszalski identify a solid lead and possible motive for the shooting. At the DDA's office, tensions are running high when DDA's Dekker and Rubirosa disagree on how to handle the case. And meanwhile, TJ gets himself into a sticky situation as he continues his quest to find his dead partner's killer."
Or are there any particular minute marks to watch? (I generally find police procedurals to be tedious.)