"Jessie wants her science fair project to make a difference. So when she gets the chance to test a local creek for pollution, she can't wait to get started. But when things start going wrong with her experiment, Jessie and her siblings don't just have an experiment to investigate, they have a mystery to solve!"--WorldCat.

The Aldens try to find a missing magician. Henry is learning to perform magic tricks from The Amazing Arthur and is excited to participate in Greenfield Magic Shop's annual magic show. But then The Amazing Arthur goes missing. Is his disappearance part of a new magic trick or a mystery?

Can the Aldens figure out who's responsible for the bad press before the center gets shut down for good? Henry, Jessie, Violet, and Benny are excited to learn more about raptors when they volunteer at a rehab center for wild birds. But not long after they arrive, a series of strange events makes it seem like someone might be trying to sabotage the center. Who could the culprit be, and why would they want to cause trouble for injured birds?

The Boxcar Children stumble across a 100-year-old time capsule with a mysterious journal inside. It contains clues that lead the children around Greenfield and through the history books in search of a lost treasure. But questions remain. Who wrote the journal? And after 100 years, will there be enough evidence to find the hidden treasure?

"The Boxcar Children are helping a friend find out more about their family's history. But what they find is a mystery going back generations! Can the Aldens help their friend unlock secrets of the past--and present?" --