Shaft
The Capricorn Murders (1x6)
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A business executive under suspicion for embezzlement is killed, and his wife injured, after a fire engulfs his office. The wife hires Shaft to investigate, as the fire is determined to be arson. But all is not as it seems, and more murders occur as an associate of the executive tries to get control of the company and retrieve a diamond necklace that was put in a safe deposit box.