Bettmann/Getty ImagesCharles Starkweather and Caril Ann Fugates 1958 murder spree across Nebraska and Wyoming left 10 people dead but theyre nowhere near the most prolific serial killer couple.As well as being illegal and morally repugnant, committing murder is risky. The chance of getting caught is high enough when only one person is in on the plot; adding a second perpetrator only heightens the potential for error, and thus the likelihood of imprisonment, as these serial killer couples found out the hard way.Some of the couples below, like teenagers Charles Starkweather and Caril Ann Fugate, had just started dating when they set out on their grisly crime sprees. Others, like Ray and Faye Copeland, had been married for decades before they turned to murder.Their victims varied, too. Most of the disturbing duos targeted teens and young women, but the Copelands exclusively killed their farmhands and some of the couples simply murdered anyone who got in their way.Go inside the stories of these notorious serial killer couples and the depraved crimes they carried out.The Ken And Barbie Killers Paul Bernardo And Karla HomolkaKingston Penitentiary/Wikimedia CommonsPaul Bernardo in a November 1985 mugshot.A gruesome pair even among serial killer couples, Paul Bernardo and Karla Homolka met in Toronto in 1987. Bernardo, who was 23 at the time, had already committed multiple rapes. Homolka was 17, but despite her young age, she was disturbingly sadistic. The story goes that the two were drawn to each other almost immediately, but there was apparently a problem: Homolka wasnt a virgin. To solve this issue, Homolka decided to gift Bernardo the virginity of her 15-year-old sister, Tammy Homolka, for Christmas. On the night of Dec. 23, 1990, Homolka drugged Tammys eggnog, and when Tammy passed out, Bernardo and Homolka brutally raped her for hours and filmed the entire crime.Somehow, the end result was even worse than what the pair had planned. After abusing Tammy, Paul Bernardo and Karla Homolka left her tied up and unable to move. Sometime during the night, Tammy choked on her own vomit and died. However, a subsequent inquest found no evidence of foul play, and her death was initially ruled accidental.Bernardo and Homolka went on to repeat this grotesque act at least twice more, filming themselves sexually abusing and killing 14-year-old Leslie Mahaffy in June 1991 and 15-year-old Kristen French in April 1992. Bernardo also continued to rape other women, which is how his DNA wound up in investigators hands. Dick Loek/Toronto Star via Getty ImagesKarla Homolka and Paul Bernardo got married on June 29, 1991 the same day the body of their second victim, Leslie Mahaffy, was discovered.Then, in late 1992, Bernardo made the mistake of beating Homolka. Around the same time, detectives connected him to multiple rape cases. At that point, Homolka revealed to her aunt and uncle that she and Bernardo were behind the murders of Leslie Mahaffy and Kristen French. Homolka struck a deal with the authorities and started testifying against Bernardo, leading the police to the videotapes of the crimes.Bernardo is currently serving a life sentence, while Homolka who claimed she was a victim of domestic abuse and was forced to help Bernardo in his murderous schemes spent 12 years behind bars, from 1993 to 2005.The post 9 Infamous Serial Killer Couples And The Depraved Crimes They Carried Out Together appeared first on All That's Interesting.