 The warlock Earnes absorbs the powers of the good witches that he has been murdering. After killing his last victim, her whitelighter Nathalie is sent by the elders to join Leo to protect the Charmed ones. Nathalie follows the instructions of the elders by the book, while the sisters follow their instinct and intuition. When Phoebe has a premonition, the Halliwell sisters protect the victim, but they realize that he is a darklighter, and then they disclose he real intention of Earnes: to steal the crossbow of the darklighter, and use it to kill the whiterlighters, leaving the witches without protection.