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Now decidedly a product of Warner Bros.' grade-B unit, The Case of the Stuttering Bishop brought the Perry Mason series to a close. Donald Woods starred as Mason, with Ann Dvorak as his loyal secretary Della Street (who is constantly promised a raise that never seems to materialize) and Edward McWade in the title role. The latter asks Mason's help in a case of a young girl, Janice (Anne Nagel), who may or may not be the granddaughter of wealthy Ronald Brownley (Douglas Wood). The bishop suspects that she is a fake and it is Mason's job to find the real Janice, whose estranged mother Ida (Mira McKinney) believes her to be one Janice Seaton (Linda Perry). But before Brownley can verify this latest claim, he is murdered by what appears to be a woman wearing a light raincoat. A fingerprint in Brownley's car points to Ida as the murderess, but is she guilty? And who is the real Janice Brownley?