Clayton Monsees, Amanda Ewing's ex-husband, is also charged with capital murder as the one responsible for shooting and stabbing Billy Joe Ewing.
According to police, Amanda Ewing said she and Monsees needed to get her current husband out of the picture in order for them to renew their relationship.
The charges will have enhancements, including committing a crime in the presence of a child.
Amanda Ewing's three children were in a back bedroom during the shooting.
Ewing pleaded not guilty to the charges.