Witch Trial - S2-E1
Continuity mistake: At the spiritual place Phoebe had tan marks, but later on she didn't have any tan marks. (00:10:35)
Witch Trial - S2-E1
Continuity mistake: When the book was taken, Phoebe has her necklace above her shirt, but when she runs downstairs, her necklace is underneath her shirt and then is back on top of her shirt again. (00:06:15 - 00:18:25)
Witch Trial - S2-E1
Visible crew/equipment: While the Book of Shadows flips its pages the sisters enter the attic, and after Piper asks how the book does that, in the next shot the feet of a crewmember can be seen moving quickly out of shot, at the bottom left side of the screen. (00:03:15)
Chosen answer: Her agent/manager negotiated a special billing as part of her contract. It distinguishes her from the rest of the cast, probably when she became a producer on the show.
JC Fernandez