this is his son - he literally thinks of jake as a son. and that son, whom he’s mentored and nurtured for four full seasons, through defiance over ties and even a stint in witness protection, has been unfairly convicted of a crime holt *knows* he didn’t commit because he was trying to help him make the bust. now that son, a damn good cop according to everyone who knows him, is going to prison. his prize mentee is in love with his son, and they’ve just been sentenced to a 15 year separation. and holt has to watch, knowing that the police system he fought to make better is still deeply flawed and having to come to terms with the fact that as a cop, he just couldn’t do enough to stop this.