The Curious Case of the Rhombus is an intriguing mystery novel for kids that revolves around the enigmatic rhombus shape. The story follows a young detective named Max who is tasked with solving a puzzling rhombus-related mystery. As Max delves deeper into the case, he uncovers the hidden secrets and mathematical properties of rhombuses. This book combines mystery, problem-solving, and geometry to entertain and educate young readers.