Book 1

When her mother marries Mr. Nordstrom, Kate moves to a farm in northwest Wisconsin, solves a mystery, and learns to adjust to her new stepfamily.

Book 2

The Hidden Message

by Lois Walfrid Johnson

Published 1 March 1990
When their father leaves to earn money away from home, Kate and Anders assume more responsibility at the farm and uncover a mystery.

Book 3

The Creeping Shadows

by Lois Walfrid Johnson

Published 1 November 1990
Kate plans a birthday party for her stepbrother Anders and gets involved in the mysterious disappearance of items from the Erickson household.

Book 4

Kate, Anders, and Erik try to solve the mystery of the stolen creamery checks.

Book 5

Trouble at Wild River

by Lois Walfrid Johnson

Published 1 November 1991
In 1907 Wisconsin, Kate and her friends discover a timber swindler while visiting their Indian friend, Running Deer, and suspect that Kate's uncle, newly arrived from Sweden, may be involved.

Book 6

Kate, Anders, and Erik investigate baffling clues that lead them to tunnels in the woodpile, stolen food, and a hidden ladder.

Book 7

Kate and Anders try to follow the guidance of God when his grandparents travel from Sweden to Wisconsin and Grandma vanishes under mysterious circumstances.

Book 8

While working for the circus that is touring Wisconsin in 1907, Kate and her stepbrother Anders uncover a mystery.

Book 9

When thirteen-year-old Kate, her stepbrother Anders, and their friend Erik go to visit Kate's blind second cousin in Red Jacket, Michigan, in 1907, they try to find a long-lost map that will supposedly lead to a fortune in silver.

Book 10

After Kate buys Windsong and Breeza, two horses with a mysterious past, someone sets the Nordstrom barn on fire and Windsong disappears.