This concise French-language volume takes its cue from a question about whether images tell the truth. Aimed at young readers, it uses the idea of the image—pictures, representations, appearances, and visual tricks—to explore how something can seem convincing while remaining invented, copied, or misleading. Rather than offering a conventional narrative, the book invites readers to look closely at how images are made and interpreted, and to consider the difference between what is shown and what is real. Its short, accessible format makes it suitable for classroom discussion or independent browsing by readers interested in perception, representation, and the playful side of visual culture.