| Louise Mortimer |
|Behind the scenes|
|Appearances||"The Hounds of Baskerville"|
|Portrayed by||Sasha Behar|
- Dr Watson: "Okay, what about his father? He wasn't one of your patients. Wasn't he some sort of conspiracy nutter-theorist?"
- Dr Mortimer: "You're only a nutter if you're wrong."
- Dr Watson: "And was he wrong?"
- Dr Mortimer: "I should think so."
- — "The Hounds of Baskerville"
Dr Louise Mortimer is the psychologist who helped counsel Henry Knight.