Colin Gray, 55, was convicted of second-degree murder after his son Colt carried out a school shooting that killed four.

Colt Gray, now 16, unleashed hell in 2024 when he opened fire at a high school, killing two students and two teachers.

Colt Gray, 16, had pleaded guilty Friday to 55 counts, including murder, in the Sept. 4, 2024, shooting at the high school.