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.
Rhoda Morgenstern Rhoda Faye Morgenstern, portrayed by Valerie Harper, is a character on the television sitcom "The Mary Tyler Moore Show" and subsequent spin-off "Rhoda".