Compare the police sketches of notorious serial killers with their actual mugshots.

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The Anthropology Research Facility, a decay research facility, was founded by Dr. Bill Bass to better understand the process of decay.

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Do you recognize this woman? Police in Sumter County, Florida, are hoping this composite sketch will help identify a murder victim whose remains were discovered in Wildwood near State Road 44 and Interstate 75 on April 22. Police say she was shot to death two to four weeks prior to being found.

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The body of a murder victim often provides important information about the killer, not to mention confirmation that a murder has actually occurred. Though authorities face great challenges in bringing a killer to justice without the victim’s body, such cases are not hopeless.

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Renowned FBI agent and author Robert Ressler died Monday at age 76. During his career, Ressler made significant strides in understanding the mind of the serial killer, a term he coined. Ressler worked on the investigations of several notorious predators like Jeffrey Dahmer and Richard Chase. After retirement from the FBI, Ressler continued to write and give lectures on psychological profiling.

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When a suspect commits a crime and runs off, police sketch artists can use a witness’s description to develop a likeness of the offender. Sometimes, it doesn’t quite turn out right.

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“It was an urge. … A strong urge, and the longer I let it go the stronger it got, to where I was taking risks to go out and kill people — risks that normally, according to my little rules of operation, I wouldn’t take because they could lead to arrest.” — Edmund Kemper

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On April 3, 2001 the tale of Jason Massey came to an abrupt end at the executioner’s hand. As a young man, Massey idolized Charles Manson, became obsessed with torture and murder, and strove to become a “murder machine.”

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It might not be as action-packed as Dexter, but forensic blood analysis is nonetheless a fascinating, and ever-evolving science.

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Chris Coleman, the head of security for Joyce Meyer Ministries calls his police officer neighbor, worried after not being able to reach his wife. When police enter the house, they find a grisly scene. Coleman claimed had been receiving threatening messages at work that warned him his family would die if Meyer didn’t stop preaching. But an investigation quickly unraveled Coleman’s story.

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