Having failed to save a twelve year old mute boy from the gallows,Garrow enters the civil court to hear Hill's accusation of adultery against him in a deeply depressed mood,despite Sarah's assurances. Silvester,previously his adversary,defends him in the spirit of fair play and does well,demolishing Hill's Admiralty cronies,the prosecution witnesses,whilst Mary,Sarah's loyal maid,refuses to perjure herself. However,it is the dogged and devoted Soutouse who saves the day by bringing in a surprise,last minute witness to expose Hill's hypocrisy.

Garrow successfully defends a man falsely accused of murder at a polling day riot. Approached by the victim's daughter Garrow agrees to find and prosecute the real murderer putting himself in grave danger from the man's colleagues and chief magistrate of the constabulary. Lady Sarah seeks documents to discredit Lord Melville and legally regain her son.

Returning from war, weary and wounded, British sailors are treated with contempt and abuse at the Greenwich Hospital. One man bravely exposes the corruption, and finds himself in a Newgate cell. Southouse accuses Garrow of mixed motives as his uses the case to attack The Admiralty - and in particular its Under Secretary, Sir Arthur Hill.

William Garrow continues to defend the victms of rough justice when he wins the case of a prostitute accused of murdering a client. Garrow and Southouse's association is still strained until a desperate Mary Hamer arrives in Southouse's office, begging for Garrow to defend her husband. Joseph Hamer has been languishing in Newgate Prison without charge for many months after being arrested on suspicion of sedition. Joseph's case is followed closely by the Secretary of State, Viscount Melville, and Sir Arthur Hill, who engineer charges of high treason against him. Lady Sarah admits to a devastated Garrow that they have no future together. After learning of her husband's role in the plot against Joseph Hamer, she intervenes and the trial takes a surprising turn.

William ends up risking his reputation as he returns to the Bailey to defend James Hadfield, who is on trial for high treason for trying to eliminate King George III. He continues to enjoy an "irregular" relationship with Lady Sarah Hill and finds himself ostracised and impoverished. Separated from her husband, Sarah learns from Southouse that she has no independent rights of her own.

After more derision from Silvester, Garrow is spurred on to defend Edgar Cole, a man who is accused of raping a servant girl. Garrow controversially wins and the detestable Edgar Cole is acquitted, much to the disappointment of Lady Sarah. She confronts Garrow but Silvester interrupts and senses the intimacy between them. His insinuation offends Garrow and he challenges Silvester to a duel to defend Lady Sarah's honour. Garrow's next case sees him up against his old nemesis, the violent and unscrupulous thief-taker Edward Forrester. Forrester orders petty criminals Tom and Phebe to steal a box of lace from a shop owned by Katharine Stanton. Garrow seeks help from Southouse, but will his close friendship with Lady Sarah cost him his association with his dear mentor?

William Garrow is now a celebrated Old Bailey barrister and, encouraged by Southouse, he defends the case of the infamous Monster, a man who carries out a series of stabbings on young ladies across London. As a result, Garrow's popularity diminishes with the public and the press. However, Renwick Williams, the accused, is described by Garrow as a 'lecherous libertine' and his defence is not easy. Garrow's friendship with Lady Sarah grows closer, a fact which does not go unnoticed by her husband, Sir Arthur.

Garrow is looking for a challenge, so he agrees to defend two Spitalfield weavers accused of destroying silk looms in an act of industrial espionage - a tough case that becomes more difficult when one defendant testifies against his friend, leaving the barrister conflicted. Meanwhile, Southouse is furious with Lady Sarah for trying to get custody of Samuel.