Catholic-schooled seventh-graders Sophie, Margaret, Rebecca, and Leigh Ann help an elderly neighbor solve a puzzle her father left for her estranged daughter twenty years ago.

Seventh-graders Sophie, Margaret, Rebecca, and Leigh Ann follow a trail of cryptic clues to locate a rare violin, catch the person sneaking into St. Veronica's School for late-night cleaning and redecorating, and outsmart a conniving classmate.

Fourteen-year-old Ellie Magari's mother left shortly after Ellie was born, and her father has raised her, but Ellie always figured that one day she would meet her mother and ask her some pertinent questions--but now her mother has died, and Ellie does not know exactly how to feel about that, but she is determined, with the help of her friends in the St. Francis of Assisi's Howling Wolves marching band (where she plays the glockenspiel), to make some...