On a sunny day in June 2023, a horrific tragedy unfolded in a quiet Ohio neighborhood. A father of three young boys, Chad Doerman, 32 shot and killed his sons aged 7, 4, and 3 in cold blood, in front of his wife and stepdaughter. He also wounded his wife and held his stepdaughter at gunpoint, before surrendering to the police. What drove him to commit such a heinous act?