During Spring Break, mystery lover Amy looks for clues to the disappearance of wealthy Ms. Sullivan's Saint Bernard puppy.

Members of the Critter Club are all excited about their summer plans until Liz learns that, instead of taking an art class, she will have to be in summer school to improve her math skills, but a fun teacher, a classroom pet, support from her friends, and advice from her brother might get her through.

"Meet Maddie and Mabel, two spunky sisters who navigate their relationship with humor and heart."-- Maddie is the big sister. Mabel is the little sister. But who is actually in charge? Mabel, who never stops asking questions? Or Maddie, who can be bossy and demanding? Readers will see that being in charge might not be as important as working together. The first book in this early chapter book series introduces two relatable characters who make mistakes...