After the Boxcar Children move in with their grandfather, they spend the summer having adventures on a private island.

"Henry, Jessie, Violet, and Benny used to live in a boxcar. Now they have adventures everywhere they go. At a lighthouse, the children find a mystery in the night!"

The Aldens' friend Max says nothing interesting happens in Port Elizabeth. But when the children visit the small fishing village and come across a man snooping around the local library, they prove that every town has its mysteries.

Four young people find a lost pedigreed dog on a bicycle trip and, while trying to find its home, run into dog thieves.

The Boxcar Children are spending the summer in an enormous New England farmhouse. Near the house there is an old woodshed that holds a surprising secret that dates from the Revolutionary War.

The Boxcar Children, now living with their grandfather, spend the summer on their Aunt Jane's ranch. Their aunt seems quite unhappy until at the end of the summer a surprise discovery brings happiness to all.

The Alden family rents a houseboat to drift down the river, and encounters a mystery in the little towns along the river, involving a fast black car.

"In the town of Sleepy Hollow, the Aldens discover an old legend that's come back to life! Their friend's ghost-tour business is being disrupted by a spooky figure on horseback who throws pumpkins in the streets and frightens everyone. Has the headless horseman returned to haunt the town? The Boxcar Children must find out before the ghost tours are ruined!"--Jacket flap.

After a series of strange events, the Alden children must solve a mystery to help their friend Mike and his family.

"The Aldens are on a special vacation up north to see the Calgary Stampede -- a cowboy celebration of Canada's frontier spirit! There's a parade through the streets of Calgary, a spectacular stage show, and plenty of fun things to do. But behind the scenes at the festival, an important piece of jewelry goes missing. Can the Boxcar Children find the thief before the big show is ruined?"--Jacket flap.