Journalist and author Lawrence Vander is at Space Associates Ltd under the pretense of writing a story about the firm. In a meeting with company president Clifton Barlow, however, he reveals that a notorious Nazi, Max Kleinerman, did not die in World War II but escaped arrest using a false identity. Vander believes he is living in Los Angeles and working in Barlow's company. At around the same time, Harlan Merrill's wife, Phyllis, visits Perry Mason concerned that her husband, who works at Space Associates, is acting strangely. Merrill himself goes to see Perry to transfer all of his assets to his wife and it soon becomes apparent that he is being blackmailed. Merrill tracks Vander to a retreat the company executives frequent where he confronts Vander, who is later found dead and money is found missing from the company. Merrill breaks down and tells Perry he is a World War II army deserter but Pentagon records don't support that story. When Vander is found murdered, Merrill is charged and Perry defends him.
—garykmcd