Herbert Simms is an aspiring writer who had hopes that his script for a television show "Mr. Nobody" would be produced. A pharmacist by profession, Simms is generally a quiet spoken man but has made the mistake of sending his script to Charlie Corby, a producer of low quality films with a reputation for not paying his bills. Corby is in fact using Simms' script but has no plans to pay him for it. In fact, that production may just be a front to acquire funding for a film he wishes to produce overseas. Corby has lied about a mortgage to get the money. Simms breaks into Corby's office to steal his script back. Simms' mother who helped Perry when he was in law school asks Perry to talk to Simms. After their talk, Simms realizes he must return the script to Corby's office as Perry plans to have Corby's records seized so he returns to the office. When Corby is found dead, there are many possible suspects but it's Simms who is charged with his murder as Corby dies saying Simms' name. Perry Mason agrees to defend him.
—garykmcd