Marg Helgenberger's acting in this episode was phenomenal! Her husband (at the time) played the suspect and I could not believe that these two people were married in real life. They both are excellent in this episode.
Catherine goes to a bar after work and is assaulted by a man she meets there. Forward a few hours later, all signs point to the same man as a suspect in two murders. Catherine comes clean about her involvement with the suspect. I liked this episode more after the second time I watched it. It was very emotional and outstanding. One of my favorites!