The Alden children hunt for their late grandmother's necklace that has been missing for years.

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

While visiting the seaport town of Ragged Cove, Massachusetts, the Alden children find the ship's log of the Flying Cloud, shipwrecked in 1869, s

When the Alden children accompany their grandfather to the Snow Haven Lodge, a series of odd occurrences threaten to disrupt the annual winter ga

At the same time that the Alden children's efforts to raise money for a new hospital wing are being sabotaged by nasty tricks, they find their at

While on a cruise with their grandfather, the Alden children help discover who is behind the mysterious troubles of the ship--disconnected phone

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

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

The Alden children suspect that the other guests are somehow involved when things begin to disappear at the bed and breakfast where they are stay

While canoeing and backpacking near Timberwolf Lake, the Aldens receive strange warnings to stay away from the area and stumble upon clues to a m

While helping their grandfather prepare for Greenfield's Winter Festival, the Alden children uncover a mystery surrounding the statue in the town