For fans of Raina Telgemeier and Victoria Jamieson, this middle grade graphic novel series tells the story of Shirley and Jamila, two girl detectives on a mission to stop their school's biggest bully once and for all As Jamila settles into the rhythms of classes and after-school basketball practice, Shirley has a new mystery on her mind. Her old enemy Chuck is up to his usual tricks: He's been blackmailing kids all over school, and Shirley knows that she and Jamila can put a stop to it. They hatch a plan: They'll break into his house late one night and recover all the notes Chuck's been using to blackmail innocent kids. But while Shirley and Jamila are at the house, another intruder arrives-an intruder who can help them put a stop to Chuck's crimes once and for all.

Jamila Waheed is staring down a lonely summer in a new neighbourhood - until she meets Shirley Bones. Sure, Shirley's a little strange, but both girls need a new plan for the summer, and they might as well become friends. Then this kid Oliver shows up begging for Shirley's help. His pet gecko has disappeared, and he's sure it was stolen! That's when Jamila discovers Shirley's secret: She's the neighbourhood's best kid detective, and she's on the case. When Jamila discovers she's got some detective skills of her own, a crime-solving partnership is born. The mystery of the missing gecko turns Shirley and Jamila's summer upside down. And when their partnership hits a rough patch, they have to work together to solve the greatest mystery of all: What it means to be a friend.