Martha defends a vulnerable teenager and the pupils are given their first opportunity to stand up in court, taking on a low-level magistrates' court case. However, as the cases progress, both Martha and Nick find themselves in challenging positions. Can Martha save her client without endangering not only her silk application, but also her career?

Martha prosecutes a teacher accused of assaulting a pupil, but believes he is on too serious a charge and is not being properly defended by her colleague, Noah. Meanwhile, Nick takes on his first major case, and both Martha and Clive have their Silk interviews. Will Martha be able to ensure a fair trial for the teacher at the same time as succeeding in her interview?

Martha takes on the biggest case of her life, defending Mark Draper, a repeat offender on a murder charge at the Old Bailey. However, when the case starts to fall apart, Martha must try to remain focused on the trial as both personal and private pressures escalate. Meanwhile, it is decision time for the pupils, and the fate of chambers hangs in the balance.

Martha has to put her personal feelings aside when she is asked to defend a close friend from her past. Is she strong enough to ask him the tough questions in order to do her job properly? The evidence against him in the case of a gangland execution is overwhelming.

Martha is representing Captain Peter Ryan in a Court Martial. He's accused of disobeying an order, resulting in the death of a 19 year old private. Under the watchful eyes of a distraught family who want answers, Martha navigates the army's legal system with the help of Captain Cassidy, Ryan's Unit Defense Officer.

Martha Costello is now a QC, but she learns fast that it can be lonely at the top. At Shoe Lane Chambers times are tough, and senior clerk Billy struggles to keep things afloat while Clive Reader tries to be stoic about his unsuccessful silk application.

Martha is becoming increasingly isolated as she fights to defend ex-boyfriend Sean against overwhelming evidence. Determined to ignore an angry Clive who attempts to force her to confront the holes in her client's story, Martha begins to wonder if she's cut out for this world. As she begins to uncover further lies Sean has told she is shocked when she has to rely on an old enemy to have any hope of clearing his name.

Battle lines are drawn when Martha and Clive find themselves on opposing sides in a high profile case of assisted suicide. A mother is accused of helping her severely paralyzed daughter to die and Martha must fight to defend her client in a test case amidst the moral arguments that surround such a contentious subject.

Reluctantly representing Jody Farr, Martha will do her job, but she won't allow him or Micky to get under her skin. Fighting shifting power plays and an untenable defense she begins to feel that Jody isn't getting a fair trial and suspect's foul play. Setting a dangerous trap, can Martha uncover the unbelievable truth?