#6. Katherine Knight Cooked Her Husband and Tried to Feed Him to His Children
Katherine Knight had a well-documented history of clownfuck lunacy, beginning when she tried to strangle her first husband to death on their wedding night for daring to only have sex with her three times before falling asleep. When he finally left her, Knight took their infant daughter and dropped her on a stretch of nearby train tracks (the baby was rescued by a hobo), then rampaged through town threatening random strangers with an ax.
AAP via Canadian CRC
Knight eventually met a father of three named John Price and they moved in together, despite the fact that Price was well aware of her explosive fits of inexplicable slobbering Looney Tunes rage. Price wound up kicking her out and filed a restraining order against her, telling his co-workers that if he ever failed to show up for work, she had probably killed him. He then gallantly allowed Knight back into his house for sex and fell asleep beside her, which suggests that Price perhaps didn't completely understand how restraining orders are supposed to work. Knight underscored this error by stabbing Price 37 times. When Price didn't show up for work the next day, his co-workers called the police, who showed up at Price's house to discover his skinned, headless body lying on the living room floor.
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Knight pleaded guilty and was sentenced to life in prison with no possibility of parole -- her file literally bears the words "NEVER TO BE RELEASED," like a fucking supervillain in a subterranean vault.