Three teenagers, biological siblings separated by adoption, explore the meaning of family in all its forms--how to find it, how to keep it, and how to love it. "Perfect for fans of NBC's "This Is Us," Robin Benway's beautiful interweaving story of three very different teenagers connected by blood explores the meaning of family in all its forms--how to find it, how to keep it, and how to love it. Being the middle child has its ups and downs. But...

The Alden children plan to ride in their boxcar at the Greenfield Founders' Day Parade, but the newly refurbished boxcar is stolen a couple of days before the big event ... with their dog, Watch, in it.

Henry, Jessie, Violet, and Benny--four children who used to live alone in a boxcar and now reside with their grandfather--arrive at Camp Seagull overflowing with excitement, but they soon realize that some of the other campers are not above cheating in the annual camp Olympics.

The Alden children have another mystery to solve when they visit a castle and must figure out which of the guests has stolen the Stradivarius violin.

While on a camping trip with their grandfather, the Alden children try to find out about the loud music and missing food that threatens to scare away other campers.

Henry, Jessie, Violet, and Benny decide to investigate when they travel with their grandfather to buy honey at the Sherman's honey farm only to discover that the bees, for some reason, have quit making honey.

While staying at a London inn, the Aldens are puzzled by the peculiar behavior of two fellow guests, a mysterious stranger who follows them, and a misplaced antique brooch.

While staying at an eighteenth-century inn in Vermont, the Boxcar children become curious about the mysterious "accidents" that keep plaguing the owners.

The Alden children visit a family friend at his apple orchard which is rumored to be haunted, but instead of a ghost they find that some of the family's valuable antiques are being stolen.

While vacationing at a friend's country home, the four Alden siblings try to find a long-missing, priceless brooch and investigate the existence of a ghostly stream.