- Spooky Halloween Players - Gonna Get Stung plays as Holmes listens to bee sounds.
- The title refers to the Conan Doyle story The Adventure of the Illustrious Client. The de Mervilles and Del Gruner are based on characters in the story.
- "It's like she said, he's a monster. They don't need a why."
- ―Kitty regarding her attacker
|Elementary Season Three Episodes|
|Enough Nemesis To Go Around • The Five Orange Pipz • Just a Regular Irregular • Bella • Rip Off • Terra Pericolosa • The Adventure of the Nutmeg Concoction • End of Watch • The Eternity Injection • Seed Money • The Illustrious Client • The One That Got Away • Hemlock • The Female of the Species • When Your Number's Up • For All You Know • T-Bone and the Iceman • The View From Olympus • One Watson, One Holmes • A Stitch in Time • Under My Skin • The Best Way Out Is Always Through • Absconded • A Controlled Descent|
|Season One • Season Two • Season Three • Season Four • Season Five • Season Six • Season Seven|