The title of this short is a spoof on the popular film "Dial M for Murder."
One of the few times Pinky smokes onscreen, rather than in the opening credits.
The audience never does learn why Pinky has chosen to live in a safe, nor is the interior of Pinky's rather unconventional domicile shown.
The house interior is rather abstractly drawn, with nothing except the safe shown. But there is an old fashioned picture calendar hanging on the wall next to the safe, and some filing cabinets that appear..