"Why the hell didn't that work?" Piper asked to no one. Phoebe was rubbing her forehead; Paige's eyes were pasted to the floor. Marty tried to answer. "Maybe the potion was defective. Maybe I did something wrong with it. It's my fault." Paige placed her hand on his shoulder, rubbing it. "No, no. It's not your fault. Maybe.maybe he's too strong for the Charmed Ones." "Then how are we going to take him down?" Phoebe asked. Suddenly, Leo orbed in. "How'd it go?" he asked, and looked at his wife. Reading the expression on Piper's face, he asked," What happened?" "We had the potion, the spell, the Power of Three." Phoebe explained. "No good. Melphius smoked, but it wasn't enough." "A demon too strong." Leo imagined. It seemed impossible. The Charmed Ones were the most powerful witches in the world, and they couldn't defeat one power-stealing demon? He couldn't be that strong. "Maybe the Elders know something." "I hope someone does; pretty soon I'm going to lose it," Piper said, her face twisted in rage. Leo sighed, and orbed out. "We must have done something wrong," Paige reasoned. "Maybe we didn't read the spell right? Threw the potion at him at the wrong time?" "Everything was right," Phoebe replied. "It was us." "What do you mean?" " I mean, maybe the Power of Three wasn't enough." "We've already ruled that out though," Piper complained. "We ruled out the possibility that he's stronger than the Charmed Ones. We made ourselves believe that if we couldn't kill him, no one can." "Oh, I see," Paige realized. "The Power of Three didn't work, but we never tried the Power of Four?" "Four?" Piper asked. Following Paige's pointing finger to Marty, she said," Oh." "What?" Marty asked. "What could I do that the Charmed Ones can't?" "Give us more power for the spell. We'll say the spell together, and vanquish Melphius once and for all."