Well I ain't much into TV series' but Flesh is actually really good and every episode has a solid little cliffhanger at it's end that leaves you questioning. The emotions, the scenes, the language can be raw at times for average audience so discretion advised.
No spoilers, just a general idea of how things work - there are more or less three parallel stories going on, first is a couple having a 16 year old NRI daughter, second is 10 -13 year old girl with her little brother, both of them held captive by three people and a policewoman who works in Anti Human Traffic Unit of Mumbai Police. There's also a family of three antagonists and a side character of a lady driven by vengeance.
All the actors did their job pretty well, potrayed the agony, potrayed the madness and everything that was needed to potray.
Akshay Oberoi was insane to watch throughout the show followed by Swara Bhaskar and Mahima Makwana. I don't know what's up with the low ratings and reviews stating bad acting, either people have high standards or poor taste.
The only thing that might rub anyone the wrong way would be explicit and disturbing scenes and language and not-so-high grade locations at some points.
Otherwise everything was remarkable. I binged watched it and would definitely recommend it.