It was a tiny device, no bigger than a postage stamp.
Yet the digital memory card handed to police in the city of Anchorage, Alaska, on 30 September 2019 contained unimaginable horrors.
Labelled Homicide at Midtown Marriott, the SD card stored 39 photos and 12 videos.
The gruesome footage showed Kathleen Henry, 30, being beaten and strangled to death in a hotel room.
As Kathleen fought for her life, her attacker wasn't visible on the grainy footage.
But he could be heard loud and clear, sadistically, almost cheerfully, narrating his despicable actions to an imaginary audience.
Speaking in a distinctive South African accent,
