What character did Mary Marg Helgenberger portray where she received several award nominations in the CBS police procedural drama?
Marg Helgenberger Mary Marg Helgenberger (born November 16, 1958) is an American actress. She began her career in the early 1980s and first came to attention for playing the role of Siobhan Ryan on the daytime soap opera "Ryan's Hope" from 1982 to 1986. She is best known for her roles as Catherine Willows in the CBS police procedural drama "" (2000–12, 2013) and the subsequent TV movie "Immortality" (2015) and as K.C. Koloski in the ABC drama "China Beach" (1988–91), which earned her the 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series.
List of Major Crimes episodes "Major Crimes" is an American police procedural starring Mary McDonnell on the TNT network. A spin-off of "The Closer", "Major Crimes" follows the activities of the LAPD Major Crimes squad, charged with solving high-profile crimes in the city of Los Angeles, along with the members of the squad. The show features an ensemble cast including G. W. Bailey as Lt. Provenza, Anthony Denison as Lt. Flynn, Michael Paul Chan as Lt. Tao and Raymond Cruz as Det. Sanchez. "Major Crimes", created by James Duff and produced by Greer Sheppard and Michael M. Robin, was the highest rated scripted cable drama of 2012.