The Alden siblings try to investigate who is sabotaging the summer soccer team, stole the basketball MVP trophy, and is spying on the signals of the Cogs' pitcher.

The Aldens visit the shore in New Jersey and help out at an amusement pier that is rumored to be unsafe.

Taking a shortcut through the Greenfield Cemetery, the Aldens stumble across a local superstition which maintains that visitors are required to leave gifts or suffer the wrath of a malevolent ghost, a suspicious tradition that prompts the children to expose the truth.

"The Aldens are at Wildcat Crossing, a recreated frontier town full of cowboy fun. But when horses disappear and other pranks threaten to ruin the Wild West show, the Boxcar Children must find out who's the varmint causing all the trouble"--

"Wanting to create a science fair project that makes an actual difference, Jessie decides to test a local creek for pollutants before her experiments are sabotaged by suspicious accidents"--

When strange mishaps occur while the Boxcar Children are helping to harvest honey at a farm owned by one of their grandfather's friends, the children set out to investigate whether someone is trying to ruin the harvest.