"Well Doctor VonBoom, perhaps you'd like to explain the source of your newfound wealth and high tech equipment..."

This is my favorite scene from my favorite post-war noir film, "The Strange And Instantaneous Wealth And Technical Prowess of One Very Mysterious Doctor VonBoom."

This is the scene where he attempts, by guile and implied threats to explain that he is not building a doom machine, has no intention of building a doom machine, and also that he has no idea what the crate in his parlor is doing there.

After this, there is a swell fight scene where he bites the government agent's knee.