Christopher McKinney , 28, is accused of stabbing his parents after they asked him to turn off video games. His stepfather later died from his injuries. MADISON HEIGHTS, Mich. (FOX 2) - Police in Madison Heights said a 28-year-old stabbed his 66-year-old mother and 71-year-old stepfather, who later died, after they asked him to stop playing video games so they could go to bed.According to police, the stabbing happened at an apartment in Madison Heights on Friday, just before midnight when Christopher McKinney attacked his parents.