I dont care about your personal feelings for this show, I love any crime drama.
I watch this and other crime documentaries any time I can cause I want to be a detective when I grow up (I dont know any other way to put it!) So yeah it's good watch it. I've learned a lot, so it's not like I'm a rotting potato all day when I'm sick and no I have nothing better to do.
I like watching crime shows like this because I want to do something in forensics when I'm older. So this show teaches me a lot about forensic activities and similar things. It can get a little disturbing sometimes, but I, as an 11 year old am not bothered by it. Then again, it depends on the maturity of your child. I'm pretty mature for my age so I'm allowed to watch these kinds of shows on TV. I say iffy ages 11+. Okay for 14+.