Not necessarily looking for some gross graphic stuff, moreso any and all footage of serial killers in kill mode.

Leonard Lake and Charles Ng recorded themselves tormenting their victims.

Shane Allen Schindler was caught on tape attacking a decoy body, but in doing so the video showed exactly how he killed.

The Dnepropetrovsk maniacs recorded some of their crimes.

This is a bit of a reach but Ted Bundy losing it in court gave us a glimpse of what his victims saw in their last moments.