Black Widow
A black widow killer is someone who kills a spouse for money. They can have multiple marriages, as well as multiple kills. ​Although motivations for female serial killers can include attention seeking, addiction, or the result of psychopathological behavioral factors, female Black Widow killers are commonly categorized as murdering men for material gain, usually being emotionally close to their victims, and generally needing to have a relationship with the victim. This then causes the traditional cultural image of the "black widow."