The third installment of the popular Lemonade War series finds siblings Evan and Jessie Treski at their grandmother's Vermont house for the holidays, solving another mystery.

Everything about this trip to Grandma's house was different:

First, because of the fire, Mrs. Treski, Evan, and Jessie had driven up to Grandma's two days after Christmas instead of the day before, missing Christmas with Grandma entirely.

Second,

...

On a summer visit to her grandmother's cottage by the ocean, twelve-year-old Martha gains perspective on the death of a classmate, on her relationship with her grandmother, on her feelings for an older boy, and on her plans to be a writer.

Robin and Zo-Zo's summer begins with the discovery of a thick scum over the top of the lake they both love, the result of an algae bloom. But during the course of taking action in a community effort to clean it up, they both develop a crush on the same volunteer, a boy named McCoy. To help repair things between the girls, Robin's grandmother, Griff, suggests a high-seas adventure with a whale-saving old friend of hers, Finn Rapier. Robin is worried...

"Children go to their grandmother's house to bake and enjoy spending time with their loving grandmother"--

Celebrates grandmothers who are cake bakers, jungle gym climbers, dragon defeaters, and more, and the special bonds they have with their grandchildren.

Grandma is coming to visit and she will use any possible method of transport, including a horse and a hot air balloon, to get there.

"Mia's abuela has left her sunny house with parrots and palm trees to live with Mia and her parents in the city. The night she arrives, Mia tries to share her favorite book with Abuela before they go to sleep and discovers that Abuela can't read the words inside. So while they cook, Mia helps Abuela learn English ("Dough. Masa"), and Mia learns some Spanish too, but it's still hard for Abuela to learn the words she needs to tell Mia all her stories....

"A group of kids help Bábo (Grandma) wash all their Armenian rugs on rug-washing day"--

No todas las abuelitas resultan tan simpáticas y cariñosas como la de María. Hay algunas que gruñen como ogros, otras que no dicen ni "pío". La de María, además de ser alegre, tiene ruedas sin ser bicicleta ni patín.--Desde la descripción de la editorial.

A boy sets out to find someone to answer a question that he asks his grandmother, and eventually his quest leads him back home.