None.

The Wolf Man kills a cop by strangling him and biting him.

The Wolf Man kills a child offscreen and we see the villagers carrying her body.

Frankenstein's monster and the Wolf Man wrestle and fight each other but their fighting is stopped when the castle they're in gets swept away by the destroyed dam.

At the beginning two robbers try to rob Lawrence Talbot's grave. When they open up his grave the moonlight shines on his body. He comes back to life and turns into a werewolf (though it only shows his hand). He is holding one of the robber's hands. The other robber escapes.

The scene at the beginning where the robbers awaken Lawrence Talbot isscary. Larry's tranformations are scary too. Frankenstein's monster could also scare viewers.