Scott: so we need a big spear to kill it.
Artemis: well when I shot it with a silver arrowhead it ran off but it left a scratch so whoever has that scratch is the beast.
Lydia: where did you hear that story from.
Artemis: my grandpa but he's dead now.
Stiles: what did Marie-Jeanne use to kill her brother.
Artemis: with a spear with a silver arrowhead the spear had mountain ash and their blood under the full moon.
Scott: so what if we get that and get the blood from Argent and we can kill it.
Artemis: it's not that simple Scott.
Malia: this thing is killing everyone we got to try something.
Artemis: fine if you all want to die be my guess I'm getting the hell out of here.

Then Artemis left Scott's house she is going to see Chris Argent