Tefkin was born in Los Angeles, California. She may be best known for her role as Robin Maxwell on the 1983 science fiction miniseries V (replacing Dominique Dunne, who was murdered in pre-production), the 1984 sequel V: The Final Battle, and V: The Series. Other notable television roles include Chris Elliott's love interest, Charlene, on Get a Life.
In 1996, Tefkin signed a songwriting and development deal with PolyGram Publishing and formed pop band Lucie Gamelon, singing and playing bass. Lucie Gamelon played the L.A. music scene for several years, as well as major dates on the 1998 Lilith Fair tour and released a six-song EP: Everything Is Nice.
Tefkin released her first solo CD Shocked & Devastated, on her own Bossyboots Records label in 2001. In 2004, Tefkin wrote and performed the critically acclaimed one-woman show In the Land of the Giants: A Tragicomedy With Music at the Blank Theatre in Hollywood.
