Witches can't run away from their legacy, at least not the Halliwell sisters -- Prue (Shannen Doherty), Piper (Holly Marie Combs) and Phoebe (Alyssa Milano).
Paige casts a spell that brings back a prince from one of her past lives into the 21st century. Her past (evil) self follows and trouble ensues.
S4E5 43 min