The Worst Episodes of 21st Century Serial Killers

This episode deals with Jesse Matthew, guilty of the murders of Morgan Harrington and Hannah Graham.

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The documentary looks at Stephen Port, who preyed on young men and spent hours searching web porn. The predator took the lives of four much-loved men.

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The programme delves into the crimes of William Devin Howell, who murdered opioid-addicted prostitutes and kept the killings secret for 14 years.

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A profile of murderer James Fairweather, who stabbed two people to death in Essex in the space of three months in 2014.

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The crimes of Mark Martin, who idolised serial killers before becoming one himself. Martin killed three homeless women in Nottingham between December 2004 and January 2005.

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A profile of Shawn Grate, who was given the death penalty in June 2018 after being convicted of two murders in Ashland County, Ohio.

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The documentary looks at the crimes of Donna Perry, a transgender serial killer who blamed her crimes on Douglas Perry, the man she used to be.

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