2012 Waller killings
2012 familicide

On March 20, 2012, married couple Rhonda and Lawton Sesler and their eldest son Mark Sesler were killed in a shooting at their home in Waller, Texas, United States. Police arrested the younger son, 22-year-old Trey Sesler, the same day at a friend's house. Investigators say that Sesler was heavily inspired by the Columbine High School massacre and had initially planned a school shooting at Waller High School after murdering his family.
Perpetrator
Trey Eric Sesler (born August 3, 1989) is an American former YouTuber who went by the alias "Mr. Anime." Sesler told investigators that he heavily studied mass murderers and serial killers and had a desire of perpetrating a school shooting at Waller High School.
Sesler admitted to investigators that he committed other crimes prior to the shooting, including killing animals and shooting near schools in the middle of the night. He had killed several family pets before the shooting to prepare for the murder of his family. He had no criminal record prior to the shooting. Investigators called Sesler "a classic example of a killer who starts with small crimes and builds up to the unthinkable."
YouTube channel
On September 14, 2006, Sesler created the channel "LensCapProductions." Sesler's first few years on YouTube consisted of anime series reviews and skits. On December 27, 2011, Sesler posted a video telling his fans that he had been diagnosed with pneumothorax.
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