There's an old adage that says true friends will do anything for each other, even murder. However, for some people, they take that proclaimation a little too literally. That's what happened with Robyn Davis and Carol Saltzman, who were both convicted of killing Robyn's husband. Prosecutors threw the book at them even though, today, they still claim they're innocent. Investigators even dubbed the crime the Thelma and Louise case after the famous movie where two best friends kill an abusive husband. But what is the motivation to commit a crime in pairs? For some, it's thrill seeking and for others, it's to help each other get out of a dire situation. Whatever the reasoning is, these cases below of people who committed murder together prove that best friends really are "partners in crime."