"Harriet Wermer investigates more mysteries during her stay on Marble Island"

When Emma's little brother Jake looks after the neighbor's dog in preparation for getting his own puppy, the pet goes missing and Emma and the rest of the girls have to find it before the owner comes home.

Eleven-year-old Emily Elizabeth Davis has been told for her entire life that her destiny is to become a poet, just like her famous namesake, Emily Dickinson. But Emily doesn't even really like poetry, and she has a secret career ambition that she suspects her English-professor mother will frown on. Then, just after discovering that it contains an important family secret, she loses the special volume of Emily Dickinson's poetry that was given to her...

"Paloma Marquez is traveling to Mexico City, birthplace of her deceased father, for the very first time. She's hoping that spending time in Mexico will help her unlock memories of the too-brief time they spent together. While in Mexico, Paloma meets Lizzie and Gael, who present her with an irresistible challenge: the siblings want her to help them find a valuable ring that once belonged to beloved Mexican artist Frida Kahlo"--Amazon.com.

"It's winter in the town of Eerie-on-Sea, where the mist is thick and the salt spray is rattling the windows of the Grand Nautilus Hotel. Inside, young Herbert Lemon, Lost and Founder for the hotel, has an unexpected visitor. It seems that Violet Parma, a fearless girl around his age, lost her parents at the hotel when she was a baby, and she's sure that the nervous Herbert is the only person who can help her find them. The trouble is, Violet is...

"Whenever Jake and Marisol get together, adventure follows. They have their late Nana to thank for that. Her epic trips and treasure hunts were legendary. With the whole family reuniting for one last summer vacation at Nana's home, the cousins are prepared for an extraordinary trip of their own. Following a map Nana left behind, Jake and Marisol sneak out to a nearby lighthouse--then accidentally slip into another world! The World Between Blinks is...

"There's a mystery mischief-maker on the loose in Hills Village! Can Junior solve the mystery before disaster strikes?"--