It's around 8:30pm, and Walter Bart has been forewarned that justice is fast catching up with him. He is taking quick countermeasures, and these include Elise Scott, who is so amazingly alike prime witness Helen Henderson, and psychologist Dr Schneider. We're going to visit Walter shortly to hear more of his strange and terrible scheme, but first Perry Mason is making plans of his own. Moments ago, Perry accompanied by his secretary, walked into the office of homicide Lieutenant Tragg...