Has the Tasmanian Tiger Really Disappeared? The thylacine, also known as the Tasmanian wolf, is officially considered extinct following the death of the last known specimen in 1936. Yet, since that time and even today, numerous eyewitness reports have been recorded. Despite several expeditions aimed at finding living individuals, no conclusive evidence has ever been obtained. Moreover, these investigations—often affected by numerous biases and challenges—were far from optimal. Additionally, arguments supporting the existence of a residual population have frequently been underestimated, leaving large areas of uncertainty surrounding the thylacine’s possible survival. But what are these arguments? Book Description French private detective Joseph Conserve is commissioned by the Australian government to investigate the possible survival of this species. Skeptical yet intrigued, he travels to Tasmania with his friend Julie and conducts a methodical investigation: analyzing testimonies, exploring wilderness areas, interviewing scientists and locals, and setting up camera traps. Despite numerous factors contradicting the animal’s existence, several troubling clues keep the doubt alive. Amid hope, false leads, and unexpected discoveries, their investigation becomes a quest for truth—probing the limits of scientific knowledge and the possibility that the Tasmanian tiger may still survive in the most remote areas of the island. A Genre Between Investigation and Mysterious Thriller The story blends elements of a detective novel with those of an adventure narrative. The central theme—the potential survival of an officially extinct species—introduces a speculative fiction element, sometimes associated with crypto-realism: a realistic fiction exploring the boundary between science, myth, and the unknown. The suspense is driven by scientific and psychological uncertainty, with each clue discovered by the protagonists fueling a tension rooted in doubt rather than danger. The narrative plays on ambiguity, confronting the rational with the possible, creating an intellectual suspense that encourages understanding rather than fear. There is also a suspense of anticipation: will the cameras finally capture proof? Will the testimonies converge? The style of this naturalist thriller is clear, narrative, and accessible, with a strong documentary dimension . It combines visual descriptions, scientific information, and natural dialogue to create a realistic and immersive investigation. While not aiming for literary flourish , the writing remains fluid and educational. Intended Audience This story, over 17,000 words with images based on exploration, mystery, and scientific discovery, is accessible from age twelve. It is especially suited to curious readers who enjoy blending scientific reality with investigation and mystery. It appeals to those fascinated by stories based on real or plausible events, reflections on nature, extinct species, and the shadowy areas of science. Fans of soft thrillers, naturalist adventures, docu-fiction, and unsolved mysteries will also find it rewarding. Likewise, enthusiasts of biology, ecology, exploration, or cryptozoology will be captivated. Extinct or surviving? Dive into the adventure and decide for yourself!