“Now, if either of you should think of something, you ring me up. And, Detective Farthering "-he shook his finger at Drew-" you and that young Dennison scamp mind you don't interfere with police business. Do all the clever thinking you want, and when you get an idea, I'll be happy to hear it. But you let the police do the investigating. Do I make myself clear?" "Why, Inspector, I never -”
Book:Rules of Murder