Source: "As Starr was preparing for bed, she heard the doorbell ring. She first thought it was her husband who might have accidentally locked himself out of the house.
As she approached the front door she heard a man say "Boulder County police." As she opened the door, a man with a mask pushed it open and pinned her against the wall.
Starr said he was armed with a gun and carried a flashlight. She reached for a baseball bat that she'd kept by the door for 26 years. The intruder dropped the gun - it turned out to be a plastic water pistol - and the flashlight, and pulled a hunting knife from his satchel.
Starr screamed for help as she used the end of the bat to try to push the man back outside. Mattes ran upstairs from the basement and tackled the intruder. The intruder got on top of Mattes, who tried to push the knife hand away to keep from being stabbed.
Starr repeatedly whacked the intruder on the head and back with a baseball bat. The intruder dropped the knife, and Mattes picked it up. Starr tried to call 911, but heard a commotion and ran back to the door to see that her husband had been pepper-sprayed and was again struggling for control of the knife.
Starr again hit the man with the baseball bat and told her husband, "Don't kill him." Mattes replied, "He's killing me." Starr kept striking the man while Mattes was underneath him, stabbing him from below. The intruder eventually stopped fighting, at which time the couple stopped striking and stabbing him. Starr finished her 911 call while Mattes tried to resuscitate the man. Starr can be heard on the 911 tape saying, "I must have hit him 20 times with the baseball bat!"
Less than five minutes elapsed between the first 911 call from a neighbor and the time that the intruder stopped struggling. [emphasis added]"