Code of Silence introduces us to Deaf catering worker, Alison Woods. She’s struggling to make ends meet, juggling two jobs, in a police canteen and a local bar, while also doing her best to support her Deaf mum, Julie. When DC Ashleigh Francis calls on Alison to lip read the conversations of some dangerous criminals, she is plunged into a new and exhilarating world.                                    
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