Comparatively, I wouldn't describe this prison drama as "gritty" at all. But it is a drama set in one wing of men's prison, a wing where all types of inmates are housed, especially those not suitable elsewhere such as those needing psychological care. Some have stories that are compelling, while others they focus on suggesting they may become bigger players only for them to disappear into the crowd.
You have a team of wardens with a boss who has a secret she desperately trying to keep hidden, and a new recruit she immediately seems to dislike. A new recruit whose behavior suggests she just might be as dodgy as assumed. You have the inevitable stoic veteran, and the officers trying to do a good job, another overzealous and the type who sympathizes a bit too much with the prisoners.
They deal sensitively and fairly with some topics like transgender prisoners and survivors of child molestation. There are a few brilliant scenes that show the variance of "life inside" far different than that one knows about of the US incarceration system, whether its between prisoners, wardens or a combination of both. Some are even heart-warming in their moments of humanity.
It doesn't really stand out thus far from any of the prison dramas I've watched, and certainly not those like Wentworth or Oz, but it's not a waste of time either if you like the genre. I would definitely watch more episodes as they become available.