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

The villainous Audrian Keyes claims to possess the secret of finding Navrashtya, the missing Legendary Beast of the Tundra, which prompts a perilous mission by a team of specialized Lore Keepers to set off in the dangerous Tundra and find Navrashtya no matter the cost.

When a puppy who is being trained as a police dog goes missing, third-grader Judy forms a detective agency to solve the mystery, imitating her literary heroine, Nancy Drew.

After a class trip to a floating zoo where animals are mistreated and Savannah's missing pet monkey is found in a cage, Long Island sixth-grader Griffin Bing and his band of misfits plan a rescue.

Almost a year after settling down in Oregon, Coyote embarks on a cross-country road trip with her dad to scatter her mom's ashes, but the journey takes an unexpected turn when she realizes the secret to the chosen resting place lies in a lost book.

Meena quickly joins the hunt for her friend Sofía's missing cat Oriol, but finds her friendship skills tested when Meena learns that Sofía and her family may be moving away.

Aspiring Professional Adventurer Mr. Penguin, his colleague, Colin the spider, and friends Edith and Gordon crash-land on a snowy mountain where they face an evil hypnotist and seek missing pets.--

Told from three viewpoints, teens Doris, Nell, and Grant find friendship and the possibility of love while working in Unclaimed Baggage, a store that sells items that went missing during airline travel. Doris has mostly kept to herself since the terrible waterslide incident a few years ago. Nell had to leave behind her best friends, perfect life, and too-good-to-be-true boyfriend in Chicago to move to Alabama. Grant was the star quarterback whose...

When Buster, Nova and Chauncey find a lost stray they take to the streets to find its old owner, but this strange cat turns out to be a ghost, and reuniting him with his lost owner is going to be a lot harder than they thought.

With her kitten, Moisturizer, missing and having fought with her best friend, Margaret, eight-year-old Clementine finds it hard to concentrate on doing her best as her classmate's Friend of the Week.