Wolf Moon
The Hale pack only had three Alphas in total, the one in charge and the two eldest offspring. Considering that Mrs. Hale and Laura were both females and, therefore, neither could be the owner of the pink dick Stiles could see just poked out of its protective sheath, Stiles was going to go with this being Derek here in front of him.
Derek, who was coming closer, big paws crunching over grass, rocks and fallen leaves. Coming ever closer—and, no, no that wasn’t Derek just coming closer.
That was Derek stalking towards Stiles.