A doctor shot dead his wife on their wedding night during an argument before turning the gun on himself, officials say.
George Samson, 54, opened fire on Kelly Ecker, 50, at their mansion in Terre Haute, Indiana, early on Sunday.
The row turned deadly shortly after their last guest left a post-reception gathering at the couple's home.
Ms Ecker, a nurse, phoned emergency services to say that her husband, an anaesthesiologist, was "beating the s*** out of me".
By the time police arrived, she had multiple fatal gunshot wounds to the head and torso with a 40-calibre semi-automatic pistol. He was found dead in the basement.
Ms Ecker's 10-year-old son from a previous relationship and an elderly couple were in the home at the time of the shootings, the Indy Star reported.
Vigo County Chief Deputy Sheriff Clark Cottom told the newspaper: "The investigation has revealed that there was a verbal argument between the couple toward the end of the reception, which carried over to the after-party at the couples' home."
It is not clear what the newlyweds were arguing about.