Born in Chicago, Illinois, Robin (Jessica) Tunney studied acting at the Chicago Academy for the Arts and spent her summer performing in such plays, as "Bus Stop" and "Agnes of God". By the time she was 18 years old, she decided to relocate to Los Angeles with the hope to further her acting career. There, she landed recurring parts on TV series, like "Class of '96", "Law & Order", "Dream On", and "Life Goes On".
Tunney's performance as suicidal teenager Debra in the 1995 film "Empire Records" was considered as her breakout role that launched her career a notch higher in Hollywood showbiz. She continued earning wider attention with her portrayal of witch Sarah Bailey in "The Craft" the following year. In the next years, she steadily took on roles in notable features, including "Niagara, Niagara", "End of Days", "Vertical Limit", "House", "Prison Break", and "August".
Among all her acting projects, Tunney was best known for her starring role as Teresa Lisbon on the police procedural television series "The Mentalist" aired on CBS. She's been acting on the show beginning from 2005.
Regarding her love life, Tunney married producer and director Bob Gosse on October 4, 1997, but divorced in 2006. The June 19, 1972 born actress was then engaged to Australian writer and director Andrew Dominik, yet called off the engagement by August 2010. On Christmas 2012, she got engaged to interior designer Nicky Marmet.