- [last lines]
- Mary Morstan: Please... ask me.
- Dr. John H. Watson: Will... you, um...
- Mary Morstan: Yes.
- [they kiss]
- Sherlock Holmes: Amazing!
- Dr. John H. Watson: Elementary, my dear Holmes. Elementary.
- Dr. John H. Watson: Well, it's frightfully simple, isn't it?
- Sherlock Holmes: Is it?
- Dr. John H. Watson: Well, now we know who did it, all we have to do is to catch him.
- Sherlock Holmes: Yes, that's all. Well, you go out and catch him, and I'll wait here 'til you come back.
- Dr. John H. Watson: Yes.
- [Watson turns to leave, but suddenly comes to a stop]
- Dr. John H. Watson: Er, but where'll I go?
- Sherlock Holmes: Exactly. Let's leave jumping to conclusions to the professional detectives.
- Det. Insp. Atherly Jones: I want to know where the pearls are.
- Dr. John H. Watson: Yes, where are they?
- Mary Morstan: Small's taken them.
- Dr. John H. Watson: Then they are at the bottom of the river where we can find them... so now you'll be so terribly rich, I can't even claim you as a friend, much less ask you...
- Mary Morstan: What?
- Sherlock Holmes: Sorry the jewels are so distasteful to you, Ms. Marston, but I have the pearls. I took them from Jonathan Small when we first came to grips. I didn't want them to get wet, so I'm afraid you'll have to have them back
- Dr. John H. Watson: Amazing!
- Sherlock Holmes: Elementary, my dear Watson, elementary.
- Sherlock Holmes: An amateur investigator like myself can't have too many facts of a case to work on.
- Det. Insp. Atherly Jones: What I always says is, Mr. Holmes: an ounce of practice is worth a tonne of theory.
- Sherlock Holmes: Yes, yes. I've heard you say it.
- Jonathan Small: Listen to me! How many times do I gotta knock it into your block that when you done something the law says you shouldn't, don't start changing the new places. It's then that you get spotted!
- Sherlock Holmes: You'd hardly thank me for theorizing over it.
- Det. Insp. Atherly Jones: What I always say, Dear Mister Holmes, An ounce of practice is worth a ton of theory
- Sherlock Holmes: Yes, Yes I've heard you say it.
- Dr. John H. Watson: I'd blow my brains out if I thought it'd do any good.
- Sherlock Holmes: Well, they haven't been much use to you, old fellow.
- Jonathan Small: There'll be no murderin' unless absolutely necessary. Can't do much of it without leaving some clue.
- Major Sholto: [Of the pearls] My sons - don't quarrel over them. What suffering they've caused already!
- The Tattooed Man: [On being tattooed] I'd rather be 'ung, shot, electrocuted and drahnded than go through this lot again.