The paperback editions of The Boxcar Children Mysteries: #5, Mike's Mystery; #6, Blue Bay Mystery; #7, The Woodshed Mystery; and #8, The Lighthouse Mystery are offered together in a cardboard case.

The Greenfield Museum is holding a special exhibit about ancient Egypt, and the main attraction is a 4,000-year-old mummy. The Aldens are helping the museum curator set up the exhibit and learning about life in ancient Egypt. But the longer the Aldens are around the mummy, the more things go wrong. As the children search for the cause of all the bad luck, everything points back to the spooky sarcophagus. Has the museum been struck by a curse from the ancient mummy?

While visiting a friend in New York City, the Aldens investigate the theft of a valuable diamond.

The Aldens discover that one of Pikesville's little league coaches has been cheating all season, which is somehow related to a plan to raze the town's historic baseball field.

"The Animal Shelter Mystery: " Strange things are happening in Greenfield where the Boxcar Children live. Stray cats and dogs appear on doorsteps, but the animal shelter is forced to close, and a nice old woman disappears. Henry, Jessie, Violet, and Benny are very worried about Mrs. Newcombe. Is she in danger? Who are the strange men lurking around her house? And what are they going to do with all the animals who need homes, including a little cat they call Patches?
"The Old Motel Mystery: "Aunt Jane takes the Aldens to stay with her friend, Kay, who owns an old, shabby motel in Florida. Kay is ready to sell the motel, when the children offer to help fix it up and put it back in business. But they soon learn that someone is trying to make sure it stays "out" of business . . . forever.
"The Mystery of the Hidden Painting: "The Aldens find a mysterious painting hidden in the attic. The children learn that it is a portrait of their grandmother, whom they never knew, wearing the necklace Grandfather gave her when they were married. The necklace disappeared on their first anniversary -- and was never found. Can the Boxcar Children track down a necklace missing for so many years?

"Mystery in the Sand" The Alden family is spending sunny days at the shore and summer nights in the mobile home right on the beach One morning Benny finds a gold necklace in the sand, and a search for its owner begins a trail of clues that leads to Tower House, the strange old mansion nearby. What will the Boxcar Children find there? "Mystery Behind the Wall" The Aldens have found a mystery under their very own roof When the children found an old journal behind the closet wall in the guest room, they never dreamed it would lead them on a search for valuable coins. What happened to the girl who wrote the journal -- and what is she trying to tell them? "Bus Station Mystery" The Aldens are bound for the Science and Hobby Fair, but when a bad storm hits, they're forced to stay in the bus station. Before they know it, the Boxcar Children are in the middle of a mystery involving a polluted river, two strange boys, and a bus station manager who knows more than anyone suspects....

While helping run Jerry Taylor's general store, the Alden children investigate his mysterious employee Nancy.