While visiting Michigan's Upper Peninsula to prepare their Great-aunt Sophie's big old house for sale, the Boxcar Children encounter a mystery involving a valuable ring supposedly hidden somewhere in the house.
"The Aldens are camping on Padre Island National Seashore, which is known for a rare type of sea turtle. But someone on the island is putting the animals at risk!"--Back cover.
The Boxcar Children investigate when everything seems to go wrong for the Greenfield Museum as soon as the Museum displays a four-thousand-year-old ancient Egyptian mummy.
When their favorite pizza restaurant almost goes out of business, the Alden children try to help their friends stay open while they find out who is behind all their problems.
"When the Aldens take up the case to investigate if a catastrophic oil spill that affected hundreds of species could have been prevented, they are led on an adventure to help other endangered animals around the world"--OCLC.
"Wherever the Boxcar children go, they discover haunted havens, spooky sights, and mysterious old legends come to life! Here are three of their ghostliest adventures"--Back cover.
Follows the adventures of the four orphaned Alden children, Henry, Jessie, Violet, and Benny, after they become acquainted with their grandfather and embark on a series of adventures.
