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For reasons which he prefers to keep secret, wealthy industrialist Cameron Burgess (Paul Stewart) hires shady music promoter Clete Hawley (Richard Carlson) to groom a likable but untalented British rock singer named Sandy Chester (Martin Horsey) for superstardom. Soon afterward, Hawley is murdered, and Sandy is charged with the crime. Fortunately, Burgess is a client of Perry Mason (Raymond Burr), who agrees to defend the shaggy-haired suspect in court.