Stiles Stilinski+Season 3+*refers to

Derek's loft is somewhere in the warehouse district. It's industrial and has at least one brick wall with a hole broken through it. ...
The mental hospital where William Barrow was being kept. Established in 1912. Lydia felt that Stiles was in the basement ...

- The first virgin sacrifice is Stiles's childhood friend Heather. It was her 17th birthday, and she was planning to lose her virginity
- Sheriff Stilinski became the first guardian taken from the school the night of the recital when he came up