Boxcar children mysteries --

Someone is trying to put Aunt Jane's motel out of business, but the Alden children aren't going to let that happen.

The Boxcar children investigate the disappearance of a student's research paper from an observatory and the subsequent disappearance of another student.

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they are visiting the Crooked House, Mrs. McGregor's childhood home in the snowy countryside. When Mrs. McGregor, the Aldens' housekeeper, learns that she cannot afford to keep the Crooked House, the Aldens want to help. Mrs. McGregor tells them that ever since she was a little girl, there has been an unsolved riddle about the house. And solving the riddle could lead to a treasure! Could the treasure save the Crooked House? Can the Boxcar Children find it in time?

The Alden children are searching for a rare comic book of their favorite superhero, Captain Fantastic. They finally find the comic and something else, too--a strange note inside, "signed" by the comic's creator. The Aldens realize the note is a fake. But when they start to investigate, the mysterious note is stolen! It looks like someone wants to sabotage a superhero. The Aldens will need their super powers of investigation to catch this comic book culprit!

"The old abandoned school in Silver City is being fixed up as an art center and the Boxcar Children volunteer to help clean up the place. But the other volunteers are scared by the spooky goings-on in the school--doors lock by themselves, and chalkboard messages appear out of nowhere! Will the Aldens find out the secret of the haunted school?"--

When an elderly friend is injured, the Alden children offer to help him with his window-washing business in their small town of Greenfield and agree to help him solve a riddle that has arrived in a mysterious invitation.

The Aldens investigate when exotic and endangered animals begin to disappear from the zoo where their new friend Lindsey works.

When the Aldens have the chance to work at a candy factory, they try to find out who is sabotaging the candy and why.

The Aldens start a business producing birthday parties and find themselves investigating a series of robberies taking place during their parties.

The Boxcar children uncover a mystery on a train trip from Boston to San Francisco.

A new spooky 3-in-1 bind-up--perfect for Halloween! Includes three ghostly Boxcar mysteries. The Mystery of the Midnight Dog (#81): A small Southern town is full of stories--including one about a ghostly dog that walks in the night! The Ghost at the Drive-In Movie (#116): Strange things are happening at an old outdoor movie theater that's rumored to be haunted! The Return of the Graveyard Ghost (#133): Legend has it that a tomb at the cemetery will give some vistiors good luck--and bad luck to others!

The Aldens' boxcar is the perfect place for games, picnics, sleepovers, and fun. But is it also the perfect place for ghosts? When strange things start happening there, Benny is convinced that the boxcar is haunted.

The Boxcar children uncover a mystery when they compete in several contests at the county fair.

The Aldens visit the upstate New York town where the "Legend of Sleepy Hollow" was set and discover a headless horseman mystery all their own! Their friend's ghost tour business is threatened by a spooky figure on horseback who is throwing gory pumpkins. Who--or what--is haunting Sleepy Hollow?

"A ghost mystery in their very own boxcar, a zombie, and a pumpkin-headed creature provide plenty of spooky fun for the Aldens in these three adventures! Includes three Boxcar Children Mysteries: #100 The Mystery of the Haunted Boxcar, #124 The Pumpkin Head Mystery, and #128 The Zombie Project" -- from publisher's web site.