the lives, loves and hard cases facing barristers on the front line of criminal law, written by Bafta award-winning writer Peter Moffat. Martha Costello is in her thirties, single, passionate and a defence barrister applying for silk. Innocent until proven guilty are four words she lives by. But how does this fundamental principle stand up to examination by clients who are sometimes good, sometimes bad and sometimes evil? Silk is a slick almost hilariously generic drama series. Addictive tosh.