A leech forces itself down a guy's throat.

We see a guy throw up a bunch of blood and a leech. His dead body is seen several times lying on the floor.

Several leeches attack a guy. When the leeches attack, the camera shows quick bloody shots of them attacking their victim. We see his bloody face after he is dead.

A drunk guy has some leeches on his back after getting out of the water. He rolls around and falls back in the water. His drowned body is found later.

A woman is choked with a rope from behind. We see blood on her neck.

A guy's face is attacked by leeches.

A girl's face is attacked by leeches.

A guy is attacked by leeches. His girlfriend finds his body and is attacked by leeches too.

A girl's dead body is found.

A guy is attacked in the shower by leeches. His face is very bloody. A couple find his body.

A girl steps on a leech and electrocutes it. She picks up the dead leech and drops it.

A woman's dead body is discovered. Her neck is bloody.

We see a guy in a bloody shirt.

A guy cuts his hand with a knife (no blood seen).

A guy bites and eats a leech whole.

A guy hits another guy with a lead pipe several times (his mouth is very bloody) before impaling it into his back (we see blood coming out of the pipe).

A guy is attacked by leeches and then electrocuted in a pool (we see his dead body and the dead leeches).

Some mild profanities: 'bastard, hell, damn, dick, asshole, Jesus Christ, oh God'.

Major plot point about swimmers taking steroids.

A guy takes some steroids and washes them down with a sip from a bottle of whisky. We see him finishing the bottle later.

The leech attacks could be frightening to some viewers.