Christine Cagney (left) is one of the two main characters in the television series "Cagney & Lacey," which aired from 1982 to 1988. The character is played by actress Sharon Gless, who won two Emmy Awards for her portrayal of Cagney.

Christine Cagney is a smart, tough, and ambitious detective with the New York City Police Department. She is highly skilled at her job, but also has a tendency to push the boundaries and take risks, which often puts her in danger. Despite this, she is highly respected by her colleagues and superiors.

One of the key themes of the show is the contrast between Cagney's professional life as a detective and her personal life, which often involves struggles with relationships, alcohol, and the pressures of her job. Throughout the series, Cagney deals with a number of personal and professional challenges, including the death of her father, a battle with breast cancer, and conflicts with her partner, Mary Beth Lacey (played by Tyne Daly).

Cagney is also notable for being a trailblazer in a male-dominated profession. The character was one of the first female detectives to be depicted on television, and her success and determination inspired many women to pursue careers in law enforcement.

Overall, Christine Cagney is a complex and compelling character who played an important role in breaking down gender barriers in television and popular culture.