- Tommy Chan: Pop, I want to talk to you as man to man.
- Charlie Chan: I am ready, but you still have few years to go.
- Birmingham Brown: That's right.
- Walter Fletcher: [after Chan has checked the radium in the bank safe] Why, Mr. Chan, surely you didn't expect to find anything wrong?
- Charlie Chan: In my business always expect to find something wrong...
- Charlie Chan: You get illegal u-turn ticket?
- Birmingham Brown: Mr. Chan, I'll tell you just how it... Tommy, you tell 'im.
- Tommy Chan: I warned you, Birmingham. I said, "No u-turn here."
- Birmingham Brown: Yeah, that's what you said - "No, you turn here."
- Tommy Chan: I said "No u-turn here."
- Birmingham Brown: That's what I did. You said, "No, you turn here."
- Tommy Chan: Pop, I told him, I said, "No u-turn here."
- Birmingham Brown: Yeah, that's what you said - "No, you turn here," and I did.
- Tommy Chan: You see what I mean, Pop? I said, "No u-turn here."
- Birmingham Brown: Mr. Chan, did you hear? He said, "No, you...
- Charlie Chan: Ple-please, please! U-turns, so many u-turns, you have my head spinning like merry-go-round. You remain here until I find doghouse big enough to hold both of you.
- Tommy Chan: People are always getting in trouble for talking too much, Pop.
- Charlie Chan: Be sure you remember that.
- Bradford Harris: [annoyed] Visitors are supposed to be announced!
- Charlie Chan: [sarcastically] Sorry, police do not read Emily Post.
- Charlie Chan: Skeleton key, please!
- Police Inspector Harry Davis: You know, this is strictly illegal.
- Charlie Chan: Four murders much more illegal!
- Paula Webb: [as Chan leaves Ned and Paula in the restaurant] Must you go, Mr. Chan?
- Charlie Chan: Oh, quite necessary. Besides, much better for you to have dinner with young detective than with old detective.
- Tommy Chan: [trapped in a cave-in as Charlie taps Morse Code] Do you think you will get through, Pop?
- Charlie Chan: If not, Number Three Son and father will join honorable ancestors.
- Birmingham Brown: Mr. Chan, tell your honorable ancestors to move over and make room for me.
- Bradford Harris: [noticing Stewart who has come through a secret door] Where'd you come from? I didn't see YOU come in?
- Charlie Chan: [laconically] You can see us all go out.
- Joe, Coffee Shop Owner: Yeah, yeah, I know you're police, but I ain't done nothin', no matter WHAT my ex-wife says.
- Charlie Chan: Can you describe Van Horn?
- Joe, Coffee Shop Owner: Oh, sure. He was a sort of a short... oh, well, not too... kind of... well, he was a little bit on the heavy... oh, but his hair - oh, he had his hat on. He was just... j-just one of them mediocre guys, like you and me.
- Charlie Chan: Oh, thank you so much. Yes. Splendid.