- Mason: Her real name is Fiona something, but everybody calls her Mittens, 'cause she's really into cats. It's kind of weird.
- Sherlock Holmes: Weird enough to have taken several lives last night?
- Mason: She likes cats, so sure.
- Dr. Joan Watson: He invited me to dinner. I said yes. You said I should reevaluate him, form my own opinion. I thought this would be a good opportunity.
- Sherlock Holmes: I just got - I have one request. There are three surviving Holmes men, and you have sampled the carnal wears of one. Two would be a pattern.
- Dr. Joan Watson: This isn't a date.
- Dr. Joan Watson: You're paying him?
- Sherlock Holmes: Of course.
- Dr. Joan Watson: I thought all your helpers work for free.
- Sherlock Holmes: No one is compensated in cash. In Mason's case, I allow him to sniff your hair while you're sleeping.
- Mason: [to Watson] He's joking.
- [to Sherlock]
- Mason: Tell her you're joking.
- Sherlock Holmes: [showing Detective Bell security camera footage on his laptop] This woman visited five times in the last four days. Those are armed guards.
- Mason: I think she's yakuza.
- Sherlock Holmes: He's had too much caffeine. But the security would suggest she's somewhat powerful.