The show is gripping till episode 6th, but later on the show drags, multiple storylines which doesn't focus on the main plot.
The suspense element was handled good, but the payoff wasnt shocking, plus they don't even show how the crime actually happened.
That's the most disappointing thing from a season finale. If they would have subtracted that jail rivalry plot line and focused more on the payoff for the main murderer, it would have been atleast a 8/10