GThis programme contains stories and images that some may find upsetting. Viewer discretion is advised.
Serial Psyche
2. Cold and Calculating Killers 46 mins
Some serial killers are driven by a hatred for humankind, while others seek revenge for their abusive childhoods; some simply love to kill; a look at a killer labeled America's most meticulous serial killer, Israel Keyes.
Available until: 14 Mar 26, 23:59
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