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  • Published: 17 November 2026
  • ISBN: 9780241995655
  • Imprint: Penguin General UK
  • Format: Paperback
  • Pages: 288
  • RRP: $24.99

Killer Instinct




THE GRIPPING, TWISTY NEW LEGAL THRILLER STARRING UNDERDOG BARRISTER LEE MITCHELL IN A CASE THAT STRIKES AT THE HEART OF HER CHAMBERS

When the Senior Clerk at her Chambers is found dead in an alley, Lee Mitchell doesn’t know who she can trust.

Junior Clerk Dean is pinned for the crime. Working-class and still living on the estate where he grew up, he has the most to gain from Tom’s death.

But Lee knows how easily prejudices can snowball into convictions – and steps in to defend him.

As her Chambers crumble into a world of chaos and deceit, and long-buried secrets come to light, Lee must question how well she really knows those closest to her, and who would kill to keep their past hidden . . .

  • Published: 17 November 2026
  • ISBN: 9780241995655
  • Imprint: Penguin General UK
  • Format: Paperback
  • Pages: 288
  • RRP: $24.99

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Praise for Killer Instinct

A cast of characters you will love, a story that keeps you turning the pages

Her Honour Wendy Joseph QC, author of 'Rough Justice' and 'Unlawful Killings'

An intense legal thriller by an authentic modern voice

Greg Mosse, author of 'Murder at Church Lodge'

Vividly sketched barristers with very different social backgrounds, and with secrets to hide, affect the outcome of a manslaughter trial with a shocking twist

Rhys Taylor, barrister, arbitrator, mediator 

An elegant, well-structured legal thriller, rich with authentic detail and characters that walk off the page . . . this is the inside scoop of the dark fears beyond the prestige and passageways of power, where reputation is everything . . . A contemporary London court murder within a bubbling cauldron of class divides, dirty secrets and intrigue held taut by a latent, violent compulsion . . . An exemplary work in concealing to reveal and revealing to conceal

Nina Bhadreshwar, author of 'The Day of the Roaring'

Gripping and propulsive . . . Killer Instinct is Nicola Williams' best book yet . . . Nicola lays out the knotty threads of the story with the same restraint that her protagonist brings to the law (and that Nicola herself undoubtedly brings to her other profession) . . . Often I found myself reading way past my bed-time because I just had to know what happened next!

Judith Bryan, author of 'Bernard and the Cloth Monkey'

This gripping, unputdownable murder mystery prompts us to question the justice system and our own assumptions

S. I. Martin, author of 'Incomparable World'

Not only convincing but also fascinating . . . . The trial scenes are full of drama and the case plays out against a background of racial and class prejudice , which gives weight to this entertaining exploration of guilt and innocence

Literary Review

Compelling . . . The slow-burning Lee Mitchell legal thriller sees Nicola Williams consolidate her status as one of the more interesting British practitioners of the courtroom procedural . . . Williams knows her background intimately, be it law firm or court of justice, and this authenticity shines through and raises the book to an extra level

Crime Time

Unique and fascinating . . . I was hooked as the suspenseful drama, characters, plot twists and deep insights as they unfolded

Bernardine Evaristo

Killer Instinct is a richly-textured legal thriller with a riveting cast of characters. Taut, twisty and brimming with authenticity, it pairs a gripping plot with a timely theme. Class, privilege, wealth and entitlement are all put on trial in this compulsive tale

Kia Abdullah, author of 'Next of Kin'