WB-When Phoebe (Alyssa Milano) and Piper (Holly Marie Combs) discover the existence of their baby half-sister, Paige (Rose McGowan), they are hopeful that they can reconstitute the formidable Power of Three, but The Source has a mythological two-day window during which he can turn Paige evil forever. Brian Krause and Julian McMahon also star. Mel Damski directed the episode written by Brad Kern.
TV Guide-The Source takes the advice of his oracle and sets out to turn Paige into an evil witch by playing on her emotions in hopes that she will kill an alleged child-abuser. Meanwhile, Leo and Cole disagree on what to do about a meddling police inspector who knows the truth about the Halliwell sisters.
TV Tome-Mourning the death of Prue, Piper and Phoebe must now come to grips with the loss of their oldest sister, and the loss of the Power of Three. However, The Source discovers an unknown sister - the daughter of Patty and her Whightlighter Sam, who had been kept hidden. Paige, the now-youngest Halliwell, (who has the ability to teleport herself and other objects at will), can restore the Power of Three and reunite the sisters' strength as witches.
