"The Aldens are helping out at a harvest festival in a town at the foot of the Rocky Mountains. But something in the hills is scaring people away! Are the local rumors about a werewolf true?"--Back cover.

The Aldens help out at a medieval fair and try to find a valuable sword which has been stolen from the fair.

The Aldens investigate when a new store called the Game Spot opens in town and the neighboring shops are robbed.

When a professional hockey player comes to Greenfield with plans to build an ice skating rink, the Alden children suspect that someone in town wants to stop the project.

While vacationing at a friend's country home, the four Alden siblings try to find a long-missing, priceless brooch and investigate the existence of a ghostly stream.

Mystery in the sand: A friendly writer with a metal detector, the mysterious inhabitants of a tower house, and the discovery of a locket in the sand are ingredients for the Aldens' latest mystery. Mystery behind the wall: A young Canadian visitor helps the Alden family solve a mystery involving a lost coin collection. Bus station mystery: The Alden children, isolated in a storm at a small bus station, are led into a mystery centering on a polluted...