There are sex scenes with female nudity (minus genitalia) frequently. And some scenes with no sex but do show girls in topless bikini or in only their underwear.

female rear nudity sometimes in close up

Season One:

EPISODE ONE: (1) A man and woman engage in sex. The woman is taken from behind. Brief full frontal female nudity, male buttocks and brief pubic hair is shown. (2) A woman asks for help. Breasts are shown.

Nick Jonas has a sex scene with a woman in one of the episodes. Her bare butt and side breats are clearly visible for a lengthy amount of time. She is thrusting on top of him.

This is an MMA tv series so it's expected however there is violent scenes of characters getting stabbed, beaten and shot.

Pervasive use of 'fuck' and associated derivatives ('fucking', 'motherfucker', 'fucks'). Occasional use of 'cunt'. Other language including 'shit', 'bullshit', and 'arsehole' used.

A lot of uses of alcohol, cigarettes, cocaine and heroin throughout the series.

The scenes are not initially scary however intense for the squeamish viewer. Such scenes as gang related violence and disturbing criminal instances may make some viewers uncomfortable.