Tropes present in Fool Moon include:
- Lesser of Two Evils: John Marcone
- Monster of the Week: a Loup-Garou (super-werewolf); a bunch of lycanthropes (humans with the minds of wolves)
- Savage W Olves: Wolves are villans here.
- Sidekicks: Murphy (sort of), The Alphas (a werewolf gang)
- We Used to Be Friends: Murphy, who no longer trusts Harry, gets so angry at his suspicious behavior that she arrests him and punches him out, breaking a tooth