A naked picture of a man is seen but his body is mostly covered by a bag

It's implied that the genitals of one person will double their size because of his werewolf condition. But it's not meant in a sexual way.

Many people die over the course of the series with visible blood

Shit is used several times. Fuck is used once.

One of the characters calls another son of a bitch.

We see the town drunk in the bar drinking. The innkeeper offers two drinks to Paul and Artemis. Paul drinks it.