Bad Actors

Diana Taverner Under Pressure

The most interesting character in the Slough House series is not, despite everything, Jackson Lamb. Lamb is the most entertaining character — funnier, more mercurial, more capable of surprise. But Diana Taverner, First Desk of MI5 and Lamb’s institutional adversary-partner for eight novels, is the series’s most complex moral study: a person of genuine competence and genuine self-interest operating in a system that rewards exactly that combination.

Bad Actors gives Taverner her richest novel. Her position is threatened — not by external enemies, which she could handle, but by internal politics and the specific kind of institutional manoeuvring that she herself has practised on others. Herron is interested in what happens when the game reaches the person who thought she was running it.

Influence Operations

The novel’s central technical concern is hostile influence operations — the systematic effort by a foreign power to shape a country’s political environment by cultivating, manipulating, or blackmailing individuals in positions of influence. This is material that has become increasingly publicly discussed since the early novels in the series, and Herron handles it with his characteristic combination of technical specificity and political mordancy.

The specific influence operation in Bad Actors exploits something real: the brittleness of post-Brexit British institutions, the divisions within the political establishment that make certain individuals particularly susceptible to approaches that offer to clarify their options. Herron is not prescriptive about which institutions or individuals are most at risk — he is interested in the structural conditions that make influence operations possible, not in attributing specific blame.

Westminster as Setting

Herron’s Westminster is not the setting of political drama in the conventional sense — it does not romanticise the business of governance or the people who practice it. It is a landscape of institutional failure and personal ambition in which the two are generally inseparable. The politicians who appear in Bad Actors are not stupid, which would be simple; they are intelligent people pursuing their interests in a system that consistently rewards the wrong incentives.

The post-Brexit backdrop is specifically rendered without being polemical. Herron does not take positions on Brexit itself; he takes positions on what the division it exposed has done to the capacity of British institutions to function — and those positions are not optimistic.

The Slough House Team

By the eighth novel, the slow horses have been through enough together that their dynamics have the texture of something real. The specific quality of each character — Louisa Guy’s methodical competence, Marcus Longridge’s careful intelligence, Shirley Dander’s reckless energy, Ho’s technical skill deployed behind a wall of social indifference — is established well enough that Herron can work with each economically.

Lamb is at his most baroque in Bad Actors — his manipulation of events, his management of information, his protection of people while maintaining his usual posture of contempt, all have a quality of mature practice. He knows exactly what he’s doing, and the pleasure of watching him is the pleasure of watching a genuinely skilled person at work, even if the skill is deployed in service of objectives that are opaque until the last moment.

The Series’s Place in British Fiction

Eight novels in, the Slough House series has established its place in the tradition of British spy fiction with a clarity that a single book, however good, cannot achieve. It belongs in the company of le Carré’s Smiley novels not because it resembles them in tone or approach — it doesn’t, particularly — but because it treats the intelligence world as a legitimate lens for examining British society and its characteristic failures.

What Herron has added to the tradition is a comedy of institutional failure that le Carré’s tragic register couldn’t accommodate. The slow horses are funnier than Smiley, and their world — bureaucratically chaotic, politically compromised, morally complicated without being morally heavy — is a more accurate portrait of how intelligence services actually function in a democratic state: not as departments of heroism but as large, inefficient organisations staffed by people with normal human failings who are occasionally asked to do extraordinary things.

What the Novels Keep Saying

The intelligence politics of Bad Actors are continuous with the series’s broader examination of how democratic states manage — or fail to manage — the organisations they create to protect them. The Services need oversight; oversight is inconvenient; the people doing the overseeing are susceptible to the same pressures and incentives as everyone else. This creates a recursive problem with no clean solution.

Herron does not offer one. His endings are typically ambiguous, with immediate threats resolved and structural problems intact. This is accurate, if uncomfortable. The conditions that produce Slough House — the need to park failures somewhere, the institutional preference for managing problems rather than solving them — persist.

Our rating: 4.4/5 — A sophisticated eighth entry that puts Taverner at the centre and delivers the series’s most acute political critique.