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).
Cole officially joins the good fight when he goes undercover in an underworld brotherhood to help Prue, Phoebe, Piper, and Leo learn more about the evil. Their trust in him falters when it looks as though they are being double-crossed.
S3E19 43 min
