Calliope "Callie" Thorne (born November 20, 1969) is an American actress known for her role as Dr. Dani Santino on the USA Network series Necessary Roughness. She is also known for past work such as her roles on Homicide: Life on the Street as Detective Laura Ballard, a role she held for two seasons, and the movie Homicide: The Movie, as well as for playing Sheila Keefe on Rescue Me and Elena McNulty in The Wire.