Fred and Rose West seem to be more evil because they were born out of a twisted kind of love.Psychologist Joni E. Johnston, author of a several books on serial killers, believes that when couples kill there is usually a dimension of domestic abuse or domination involved – usually perpetrated by the male partner.But, she adds, there is something “already missing” in women who participate in rape, torture and serial killing. “Perhaps it's empathy, perhaps it's willpower, perhaps it's a moral compass,” she writes. “It's this absence that leaves room for evil.”These are some of the deadliest couples in the vile history of murder.The Moors murders – five sexually-motivated killings of children between July 1963 and October 1965 – left a scar on.
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