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.
Blake Marler Blake Marler is a fictional character on CBS's daytime drama "Guiding Light". She was portrayed by Elizabeth Keifer from August 19, 1992 to September 18, 2009. Previous portrayers include Gina Foy from June 1975 to May 1978, Cheryl Lynn Brown from January 1979 to September 26, 1980, Elizabeth Dennehy from May 1988 to June 2, 1989 and Sherry Stringfield from July 21, 1989 to August 3, 1992.