Serial killer who was convicted of manslaughter after helping her husband rape and kill three women, including her sister. She was released in July 2005 and had a child shortly after her release.
She worked as a veterinary assistant at Thorold Veterinary Clinic.
A film about her crimes, titled Karla, was released in 2006.
Her husband received a life sentence for the murders of Leslie Mahaffy, Kristen French and Tammy Homolka.
She was portrayed by That 70's Show actress Laura Prepon in Karla.