It is nearly impossible to see an episode without a death in it and the violence gets more intense as the show goes on. Decapitated bodies with their heads lying next to them and lots of stabbing and shooting, but most of it is against monsters.
Human as well as non-human monsters are shown dying throughout the series.
Many instances of characters limbs getting decapitated but most are against monsters or vampires.
Quite a few instances of cannibalism but are extremely graphic, however they are still disturbing and not sugarcoated.
We will see actual moments of violence occur and we also see lots of blood what is seen and on screen.
In one episode a vampire is decapitated with a wire. Probably one of the more violent moments in the series.
This show has lots of gore and can be disturbing as this is a regular thing in the show.
Show has lots of decapitations basically in every episode and lots of people being shot.
Level of violence: 10/10. Strong violence.
Level of graphic: 9/10.
Level of gore: 9/10.
Most episodes begin with a murder victim being killed in a bizarre fashion, which leads to investigation by the Winchesters. Athough the aftermath is show.