Photos and videos are essential components of our modern society and serve as indispensable evidence in law enforcement, journalism, and science. However, the authenticity of these media is increasingly questioned due to manipulations and forgeries. One key technology to verify the genuineness of visual material is the analysis of shadows, a fascinating process that often unfolds like a gripping crime thriller. This technique examines the light sources and their interaction with the objects in the image to identify anomalies that could indicate manipulations.