Gertrude Chandler Warner

"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.

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

Jessie wants her science fair project to make a difference. So when she gets the chance to test a local creek for pollution, she can't wait to get started. But when things start going wrong with her experiment, Jessie and her siblings don't just have an experiment to investigate, they have a mystery to solve!

In the year before they become the orphans known as the Boxcar children, Henry, Jessie, Violet, and Benny Alden live with their parents at Fair Meadow Farm, where, although times are hard, they take in a family who has been stranded in their car during a blizzard.