"Silk" is a legal drama following the rivalries, passions and intrigues of criminal law, starring Maxine Peake (Little Dorrit) and Rupert Penry-Jones (The 39 Steps) as rival barristers. As Martha defends a vulnerable teenager, the pupils are given their first opportunity to stand up in court. In a separate case at a police tribunal, she is forced to defend a police officer accused of racism. As the pressure continues to mount for Martha and the pupils, Clive receives some astonishing news that could change not only his personal life, but life at chambers for everyone.