A cunning thief is desperate to wreck the opening of a historic landmark--and Nancy is his target.

Several strangers are much too interested in getting Nancy's misterious brass key.

Discovering a fire in the stables, Nancy barely averts a terrible tragedy. She faces a new danger: a valuable has vanished.

The girls came to Black Hills Buffalo Ranch to help Bess's friend Kincaid Turner find out who stole a baby buffalo named Justice from her father's ranch.

Nancy's been alerted by Theresa Kim, a rising young artist at the village, that someone is producing brilllinatyl make fakes and selling them as antiques--for lots of money.