(TV-PG-LSV) The evil Brotherhood plots to sabotage Cole's relationship with Phoebe in an attempt to turn him back to evil. Meanwhile, Piper's power develops with some explosive results.

(TV-PG-LV) While the sisters must deal with the possibility of being separated as the newlyweds plan to move out on their own, they recall a time before they knew they were the Charmed Ones.

(TV-PG-LV) While making a potion, Paige accidentally switches bodies with Phoebe. Meanwhile, when an apprentice ninja kills his master, the sisters must find a way to vanquish him, while learning to control their switched powers.

(TV-PG-LV) With Leo as her guide, Paige goes back in time to her teen years, in an attempt to resolve her feelings about the accident that killed her parents. Meanwhile, Piper must prevent ghosts, who have inhabited Phoebe's and Cole's bodies, from fulfilling their mission.

The heart of a mermaid desires more than the freedom of the deep blue.

A former mermaid is afraid to tell her lover that she's getting her sea legs back.

Phoebe's success as a famous advice columnist won't help her, but her skills as a Charmed One will.

Cole uses the long arm of the law to bring down the Charmed Ones.

A case of mistaken identity has Piper and Paige worried.