Gage has had roles in televised productions since the mid 1960s. In 1977 she played the role of Dr. Roxanne Keloid in David Cronenberg's horror film Rabid. During the 1980s she mostly worked in American and Canadian TV productions. From 1998 to 1999 she played Lucy Becker in the TV series Highlander: The Raven. In later years she also worked as a voice Actress.
She was married to Paxton Whitehead from 1971 to 1986. She had one daughter.
