A female blackmailer is found murdered at her apartment and the police have several suspects to investigate. All have something to hide. Hugh (Edward Underdown), an aspiring young writer, was the dead girl s lover, but has now fallen in love with Alycia (Valerie Hobson). Alycia is a married woman however and her husband (James Robertson Justice) is a famous playwright and belligerent social snob. He decides to have his wife s lover narrate his new radio serial, The Voice of Merrill, but as the episodes are broadcast Inspector Thornton (Garry Marsh) realises that the storyline is helping him to discover the murderer s identity...
