Ep 6. Brain Drain

In Charmed season 4 episode 6, titled "Brain Drain," the three sisters - Piper, Phoebe, and Paige - face a new challenge as they battle against a demon named Gith. Gith is a warlock who possesses the power to drain the brain from his victims, leaving them completely mindless.

When Piper and Phoebe are attacked by Gith while investigating a magical disturbance, they find themselves powerless and unable to fight back. Paige, who was not with them at the time, discovers what has happened and tries to develop a plan to stop Gith.

Meanwhile, Gith has a new target - a brilliant scientist named Dr. Curtis Williamson who is on the verge of a groundbreaking discovery. Gith believes that by draining Dr. Williamson's brain, he will gain access to the information he needs to carry out his diabolical plan.

The sisters quickly realize that they have to find a way to stop Gith before he can harm anyone else. Luckily, they find an unlikely ally in a very unexpected place. Together, they join forces to take on Gith and put an end to his reign of terror.

Throughout the episode, the sisters are faced with intense physical and emotional challenges as they battle against a powerful enemy. But with their unique powers and unbreakable bond, they are able to overcome all obstacles and emerge victorious.

"Brain Drain" is a thrilling episode that showcases the strength, courage, and intelligence of the Charmed Ones as they use all of their skills and resources to protect those they love and defeat evil. Viewers will be on the edge of their seats as they watch the sisters take on their toughest challenge yet, and will be left eagerly anticipating the next installment in this exciting series.