Karen Page is a fictional character in
Marvel Comics'
daredevil series.
She was a secretary at the Nelson & Murdock law firm where Matt Murdock (
daredevil) worked, and was romantically involved with him, becoming close enough to her that he revealed his dual identity to her.
Eventually she moved away and, through undisclosed circumstances, became a
heroin addict, a porn star and a prostitute. In need of a fix, she sold daredevil's secret identity to a drug dealer, who in turn sold it to the
kingpin of Crime; she was forced to return to New York, where she met up again with Daredevil, cleaned up her life, and eventually resumed a relationship with Murdock. This relationship continued for several years until she was attacked by the assassin
Bullseye and killed.