Although he and Phoebe manage to fight them off, Piper is furious and yells at everyone to stop fighting so they can bury Prue in peace. Back at The Manor, Phoebe and Cole agree to try and protect Paige from Shax, despite the fact that they cannot go up against him without the Power of Three. Meanwhile, Piper tries to summon Prue with another spell, but the spell summons her grandmother Penny (Jennifer Rhodes) instead. Penny reveals to Piper that Prue is still struggling to adjust to being in the afterlife, and that she and their mother Patty (Finola Hughes) are helping Prue to process her actual death. Penny also reveals that Prue cannot be summoned back to Earth because seeing Prue would not allow the sisters to grieve and move on to continue their destiny. In the Underworld, The Source again consults the Oracle, who looks into her crystal ball and tells him that Paige's life appears to be short-lived. Whilst on a date with a man named Shane, Paige explains her life story, saying that she was adopted and is a reformed alcoholic who thought that she was related to the Halliwell sisters, but had dismissed it due to Patty dying young. Paige and Shane venture to a roof top where they are attacked by Shax. Cole and Phoebe who had been waiting for the attack to save Paige and are able to wound Shax. Leo and Cole do some investigating after Phoebe reports back that they saw her orb and Cole states that the Source thinks that Paige may be their sister - hence why he sent Shax after her. Piper then calls Grams to get her to explain, but as the truth is revealed they are exposed. Inspector Darryl Morris arrives with Inspector Cortez the man in charge of Prue's murder investigation. Cortez threatens to expose them before Morris knocks him out. The four witches send Cortez to Timbuktu and Cole goes to find him to take him home. Paige arrives at the house and the three realise that they are sisters when Shax attacks. The reformed Charmed Ones are able to finally vanquish Shax, but a scared and confused Paige runs out of the house. Shax died in his attempt on Paige's life, but the Oracle tells the Source that she hasn't solidified her bond with Piper and Phoebe yet. He thus still has a chance to shatter the Power of Three. The Oracle says that it was agreed years ago that every newly minted witch should have 48 hours to decide whether to use her powers for good or evil, the so-called "Window of Opportunity."