The roles being auditioned for this episode are: Agent Brody, Brenda, Captain Cutting, Carly, First Mate Reznor, Movie Critic, Old Brenda, Old Paige, Pirate, Waiter, Young Captain Cutting.
Source: Show Fax
NOTE: The sides released for Agent Brody appear to be sides written specifically to audition actors for the part. The scenes may or may not appear in the final show.
Agent Brody, a handsome 30-year-old, is at the police station with Sheridan and Darryl. He seems to have an interest for the sisters and says that Darryl seems to be protective of them. Sheridan sent a blood sample to Washington a few months ago and it turns out the blood as a triple helix when humans only have two. Brody seems to imply that Darryl knows to which kind of special being the blood belongs too... witches. The agent knows a lot about witches. Brody claims he is here because of the recent rash of missing women from around North Amercia who all fit a pattern that has been going on for a hundred years: they are all witches.
Source: Spoiler Fix
The episode is about ....pirates, one in particular, Captain Black Jack Cutting. He was cursed by a witch to live forever but conitnues to age. He kidnaps a witch, Brenda, to lure the sisters to him in hopes of getting him a diamondthat will awaken the fountain of eternal youth. In the kidnapping, he stabs the witch with a cursed athame, that rapidly ages her. Later, he stabs Paige, who will rapidly age. According to the sides, another actress is being cast to play old Paige, so no Rose in old makeup. Paige aging forces Phoebe and Piper to help the pirates. In the end Phoebe convinces the captain's henchment to mutiny against the captain, which they do and all die. The sides end with Phoebe grabbing the chalice from the fountain of youth to bring to Paige. Also, the Creature Head continues to haunt Leo in this episode.
Source: Television Without Pity (User canuck75)