Casey Novak was SVU's Assistant District Attorney from seasons 5 to 9, replacing ADA Alexandra Cabot. Although she quickly loses her innocence when dealing with sex crimes, she still shows uneasiness when dealing with the gray areas of human involvement, preferring the letter of the law to the messiness of each individual reality. Nonetheless, Novak has a 71 percent success rate in the cases she prosecutes, whereas the average for prosecutors is 44 percent. After initial hesitation, she becomes particularly close to Stabler as they bond over being Catholic and a love for Sports. It is revealed that in her final year of law school, Novak was engaged to a man, Charlie, who suffered from schizophrenia. She ended the relationship when his symptoms became so severe she felt she could no longer be intimate with him. In 2002, Charlie attacked her in her home during a psychotic episode. She convinced the police not to press charges, but ended the relationship. He eventually became homeless, and was found dead as a "John Doe" in the spring of 2007. She developed a deep compassion for the mentally ill afterward, but still feels guilty for not being able to help him, as shown in season 9's "Blinded." She states that she is a big supporter of the U.S military. She says that her father was an M-60 Door Gunner on a Huey during the Vietnam War. His helicopter crashed three times and he received a Purple Heart. In season 9, her final year as the SVU ADA, she grew increasingly more reckless and unsure in her prosecution. It is implied that friend and former boss Liz Donnelly aided in her censure, leading to her replacement by ADA Kim Greylek in season 10.