Goofs

After Betty Wilkens delivers the money, she stops to make a call. There is no glass in the phone booth walls. When she closes the door, the light shines from the side casting her shadow on the door area of the booth.

After a body is burned beyond recognition, dental records establish that persons identity. As this is a murder trial, both the D.A. and Perry Mason show shortcomings in their duties.

The body shown through the window of the burning cabin obviously isn't that of the murder victim.

There would be several other fingerprints on that gun that the defendant picked up at the crime scene.

A point-blank gunshot that supposedly hits someone is obviously fired to one side.

There was a hair or piece of thread caught under the lens when the opening scene was shot; it is visible at the top of the frame.

The picture of Betty Wilkins in the Los Angeles Chronicle was obviously taken when she was looking at the cottage on fire. But there were no press photographers present at the time.

While on the witness stand, Lt. Tragg finds it difficult to account for why two automatic pistol cases were found in the ashes of a burned vacation cabin and only one bullet was found. The other bullet could very easily have gone through a window.