- Sheriff Mack: [to suspects] When it comes to talkin', you people just don't enter into the spirit of the thing!
- Eddie Chan: Now that I'm here, Pop, uh, what type of murder have we got and how soon do you wish me to produce the murderer?
- Charlie Chan: Every time you open your mouth you put in more feet than centipede. Remain here and produce nothing but silence.
- Charlie Chan: No barber shaves so close but another barber finds some work to do.
- Sheriff Mack: Reckon what he says is what you might call a cutting remark.
- Roth: If anyone knew where the formula was kept, I would, but I know nothing about it at all.
- Charlie Chan: [to Sheriff Mack] To get information from him is like putting empty bucket into empty well.
- Sheriff Mack: Yeah, he is kind of dried up.
- Sheriff Mack: As my grandpa used to say: it's wonderful what doctors know. It's what they don't know that kill you.
- Eddie Chan: Gentlemen, in this matter of thought I'm sure that I can assist both of you.
- Charlie Chan: [to others] He reach oversize decision with undersized brain.
- Charlie Chan: [to Eddie] Relax!
- Roth: [to Harper over intercom] I must see you, sir. There's a murderer about the place.
- Walter Meeker: [to Harper] One of your relatives no doubt.
- Roth: [over intercom to the front gate] Hello? Who is there, please?
- Officer Jim Kimball: Police. Open the gate.
- Roth: Police? But no one called you here.
- Officer Jim Kimball: No, but I... I want to see someone in there. Open up.
- Birmingham Brown: You know what, Eddie? I got a theory on this murder.
- Eddie Chan: [chuckles] That's something I'd like to hear.
- Birmingham Brown: Yeah? Well listen. Now, the way I figure this thing out, the murderer must be on the inside; so, what we got to do is...
- Eddie Chan: What?
- Birmingham Brown: Stay outside.
- Eddie Chan: You see? That's the way to solve crime. Fast work and especially fast questioning.
- Birmingham Brown: If anybody want to live around here they got to do some fast runnin'.
- Sheriff Mack: This is way beyond me. Seems to me when folks asked me to run for sheriff, I missed a fine chance to keep quiet.
- [last lines]
- [Sheriff Mack is on road driving when Birmingham runs up to him]
- Birmingham Brown: Pardon me, Sheriff, but is this the road back to the city?
- Sheriff Mack: Yep. It's about three miles straight down that road.
- [notices Birmingham running alongside him]
- Sheriff Mack: Hey, I didn't know my car had stopped.
- Birmingham Brown: You didn't. I just slowed down. Goodbye!
- [runs off, overtaking the car]