Billie Jenkins's Book of Shadows

During the time Billie was under the tutorage of the sisters, Billie kept an extensive notes of events that have happened in the 8 years since the Charmed Ones were constituted, like about Charlene, the Witch Doctors , Grams' ring , and the Seven Deadly Sins. This diary was acquired by Dumain, who using the information provided in the diary, distracted the Charmed Ones in Gone With The Witches.