State of Wonder by Ann Patchett

Dr. Marina Singh, a pharmaceutical researcher, is sent deep into the Amazon rainforest to investigate the mysterious death of a colleague and to locate Dr. Annick Swenson, a brilliant but secretive scientist developing a revolutionary drug. As Marina journeys through the untamed jungle, she confronts the ghosts of her past, the blurred boundaries of science and ethics, and the haunting allure of discovery. Immersed in a world both breathtaking and perilous, she finds herself drawn into a moral and emotional reckoning that will alter everything she believes about loyalty, progress, and human wonder.