Book 1

When the most valuable baseball card of Elizabeth's collection disappears, her mother's first new date and a suspicious baseball card dealer are likely suspects.

Book 2

Elizabeth's work on blood types for her science fair project proves valuable when she becomes suspicious of the young woman who has appeared claiming to be Aunt Nan's niece.

Book 3

Catnapping Caper

by Vicki Berger Erwin

Published 1 July 1996
When twelve-year-old Elizabeth sets out to find a prize-winning cat which disappears from a used book store, she encounters a mystery involving rare books, secret messages, and a mysterious stranger.

Book 4

Ring Around a Mystery

by Vicki Berger Erwin

Published 1 January 1997
After Justin is accused of stealing the friendship ring he gave her, Elizabeth attempts to help him by joining a clique of "party-up girls" who are also shoplifters.

Book 5

After Elizabeth's youth group buys the figure of a baby Jesus for their congregation's nativity set, its disappearance coincides with a rash of jewel thefts in the area.

Book 6

Secret in the Old Book

by Vicki Berger Erwin

Published 1 January 1998
Elizabeth explores an old house filled with books and encounters a mysterious boy trying to sell a first edition of a novel.