While the woman is in the spa, naked in the bathtub, a man fondles her breast. It's quite a long scene with lingering close-ups on the woman's body.

A dead girl is found on her bed (butt seen).

Oral sex is implied in one scene.

A hooker goes to a spa. she removes the robe she has on exposing her breasts and side. The same hooker is later found dead (her butt and side of one of her breast's visible).

A woman is seen in her underwear.

Breasts on a sign is briefly seen.

There's some suggestive dancing.

Nude men and women are seen in a sex hotel.

A woman exposes her breast to Block.

Some women are strangled to death by the killer - most aren't shown onscreen.

There is a dead woman found shoved in a clothes dryer, which is pretty disturbing.

Block has a bloody nose and lip from a fight.

Clint's youngest daughter asks him what a hardon is.

There is very little cursing, save for one scene where the main character says 'fuck' 3 times.

The whole movie is pretty tense and it gets very suspenseful toward the end.

Scenes with the killer (sometimes wearing creepy masks) stalking his victims are suspenseful.

The main character's daughter and girlfriend are threatened.