Answer
The answer is "Charmed," a fantasy drama television series that aired from 1998 to 2006. In the show, Alyssa Milano, Holly Marie Combs, and Rose McGowan play three sisters who discover they are powerful witches with the ability to use magic. Milano's character, Phoebe Halliwell, encounters a demon named Kyra in the fourth season when her past life as a powerful witch is awakened.