Forensic science is advancing rapidly. What began 100 years ago with fingerprint analysis has evolved into a high-tech discipline. Today, even the smallest traces of DNA can help investigators identify a suspected killer. For criminals, the walls are closing in. Crime scenes are now scanned with lasers and reconstructed virtually, allowing investigators to revisit every detail and reexamine how a crime may have unfolded. The same technology is increasingly being used on corpses, which can also be digitally scanned and analyzed. But artificial intelligence is creating new challenges for investigators. Criminals are using AI tools to manipulate video and audio recordings, producing highly realistic fake content. The software needed for such alterations is freely available online, raising serious concerns for criminal investigations and the integrity of evidence.