The Talisman School for Girls

Priscilla and Penelope Poindexter are wealthy heiresses to an advertising firm when their parents are killed in a tragic accident. in 1904. They have no relatives to care for them, and are sent to the Talisman School for Girls to live until they turn eighteen, and can inherit their fortunes.
The school is filled with other wealthy heiresses, and as the girls learn about each other, the realize they have three things in common: their parents all died in tragic accidents, they cannot escape the school, and they are all missing a beloved keepsake that Headmistress Talisman took from them upon entering the school.

The girls must find a way to break the spell of Mrs.Talisman, who is somehow keeping them there to steal their fortunes.