Gertrude Chandler Warner

The Alden children investigate various mix-ups at a zoo run by their grandfather's friend in an effort to save it not only from pranksters but also from the town council.

The mysterious disappearance of a reclusive neighbor's cat involves the Boxcar children in some complicated detective work.

When the Alden children join a group of volunteers to fix up an old house for senior citizens, they try to explain the puzzling behavior of their coworkers as well as investigate some unusual events.

The Aldens try out a Halloween escape room. The puzzle are fun to solve. But when eerie events start scaring people away, the children find a much bigger case to crack.

While visiting a Navaho Indian reservation in New Mexico, the Aldens try to save a forest under threat of development by proving it is the site of a lost, buried village, but someone is sabotaging their dig.

While staying at a hotel in New York City, the Aldens investigate a series of annoying pranks plaguing the management and guests.

When the Aldens visit Yellowstone they discover a map showing the way to an old cabin where gold is supposedly hidden, but they encounter lots of interference in their attempts to hike the trail.

"Jessie and Benny are participating in the Great Greenfield Bake-Off, a local baking competition for kids. But ingredients get mixed up during the competition and then the power goes out. Is someone trying to put an end to the contest?" -- provided by the publisher.

"The winter sports season is here, and the Aldens are excited about all the snow activities--especially snowboarding. But soon they find themselves in the middle of a mystery surrounding a star athlete and a stolen snowboard"-- Provided by publisher.

The Boxcar Children
Henry, Jessie, Violet, and Benny, four orphaned siblings, suddenly appear in a small town. The children make a home for themselves in an abandoned red boxcar they discover in the woods. Ambitious and resourceful, the plucky children make a happy life for themselves—until Violet gets too sick for her brothers and sister to care for her.

Surprise Island
Adventure abounds as Henry, Jessie, Violet,...