Coven number of persons involved may vary. Although some consider thirteen to be ideal (probably in deference to Murray's theories), any group of at least three can be a coven. A group of two is usually called a "working couple" (regardless of the sexes). Within the community, many believe that a coven larger than thirteen is unwieldy, citing unwieldy group dynamics and an unfair burden on the leadership. When a coven has grown too large to be manageable, it may split, or "hive". In Wicca, this may also occur when a newly made High Priest or High Priestess, also called 3rd
Whispering to Witches try to make sense of the situation. Twiggy reveals that there is a book entitled "Which Witch" that gives the name and description of every witch in existence. The first witches the two decide to investigate are Harriet Perkins and Aubry White, who turn out to be the woman wearing the pink woolen suit, and the man wearing the pinstripe suite, respectively, from the train. They realise the Coven has been burgled while they were gone. They find a re-growing potion that Patsy had been working on was stolen, and a small drop of the potion caused a branch to