Crafting Ethical and Moral Dilemmas in Crime Fiction

By Chris Berg and Paul James Smith

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In crime fiction, the most powerful moments often aren’t about car chases or shootouts—they’re about impossible choices. Think of Martin Scorsese’s The Departed. At the climax, undercover cop Billy Costigan (Leonardo DiCaprio) faces off against corrupt officer Colin Sullivan (Matt Damon). Costigan has proof Sullivan is a mob mole; unfortunately for him, his cover’s blown too. Both men have a decision to make—cling to their oaths or focus on staying alive. Neither option comes easy, and whichever path they take, both moral and ethical consequences follow.

These are the crossroads we construct as thriller writers. They're neither black nor white; they thrive in the gray spaces that test characters' mettle, deliciously unsettle readers, and propel plots into uncharted territory. Incorporating these dilemmas into your narrative can evolve a simple crime yarn into something truly memorable.

Building the Perfect Dilemma

A moral or ethical dilemma isn’t just a tricky choice. It’s a collision of imperatives: follow one, and you sacrifice another. There’s no safe option, no loophole. A detective may bend the law in pursuit of justice. An officer might cover for a corrupt partner at the expense of his or her own integrity. The power lies in the personal and professional damage they cause.

The reason they matter is simple: dilemmas pull readers deeper into your story. They imagine themselves in the character’s shoes—Would I do that? Could I live with it?—and the suspense turns personal. This is where thrillers move beyond plot mechanics to something that lingers with the reader.

Thrillers hook readers with action, but it's these dilemmas that leave a longer-lasting impression. When characters fight with right and wrong, they feel human; when choices carry heavy consequences, suspense clings through the last page; and when these decisions shift the story, the narrative gains depth.

Compelling thrillers reveal the world as it is—messy, complicated, morally uncertain. They reflect life’s tangled ethics and blurred lines between right and wrong.

Ethical Battles at the Heart of Thrillers 

At their core, many crime thrillers circle the same inescapable questions—for example:

• Justice vs. Law: Do the ends ever justify breaking the rules?

• Loyalty vs. Duty: Protect a partner—or expose their corruption?

• Greater Good vs. Personal Cost: Is it just to sacrifice one to save many?

• Truth vs. Harm: Is the truth ever worth the cost of an innocent life?

Used thoughtfully, these tensions box characters in and pull readers with them.

Building Choices With Real Consequences

Effective dilemmas live in the character’s DNA, not just in plot mechanics. Begin by connecting the choice to your character's past. For example, a detective who delays reporting misconduct may be afraid not just of professional fallout but also of reliving past wounds.

Then, raise the stakes. If the outcome doesn’t alter lives, careers, or relationships, readers won’t care. Make sure every choice matters. And consider timing and consequences—dramatic shifts, unexpected turns, pivotal moments—when decisions matter the most.

Avoiding Missteps

Even the strongest ideas can falter. A scene overloaded with conflicting pressures quickly loses focus, while a dilemma wrapped up too neatly robs the story of tension. Preaching to the reader rarely works—let them wrestle with the consequences themselves. And characters must remain true to who they are; a cautious cop doesn’t suddenly take reckless risks without careful buildup. These dilemmas aren’t tidy. Show the cost of choices, reveal the fallout, and leave readers to navigate the gray areas on their own.

Consequences in Motion

In real life, decisions don’t disappear with the turn of a page—and in crime fiction, they shouldn’t either. A detective who plants evidence doesn’t just secure a conviction; he carries the fear of exposure, the hit to his integrity, and the strain on his friendships. A protagonist who shields a corrupt partner may find that the betrayal festers, eventually detonating at the worst possible moment. The aftermath matters as much as the choice itself. By showing this, your thriller reflects a fundamental truth: these decisions change people.

Make the Choice Matter

If you’re working on a manuscript, choose a single storyline and place your protagonist in a true moral or ethical squeeze. Force him or her to choose between two bad options. Heighten the cost. Resist the urge to offer a safe escape hatch. Then, see how the story shifts around your choice.

Readers stay hooked not by the action itself, but by the choices that lead to it. When a character is trapped by a dilemma, forced to confront who they are and what they’re willing to risk, the reader leans in, breath held. That is the moment when a thriller truly comes alive.

In crafting these tensions, prioritize authenticity over resolution—let the gray areas stand. This approach not only sustains suspense but mirrors the complexities of real ethical terrain. Apply it deliberately, and your story will gain the weight it deserves.

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Chris Berg and Paul James Smith: Claymore Award Winners | PageTurner Award Finalists | Authors of The Night Police Novels

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This article is adapted from a presentation delivered at the 2025 Killer Nashville International Writers’ Conference. It explores how moral and ethical dilemmas elevate crime fiction, giving readers moments of tension that linger long after the story ends.

What is A Thriller?

By Carol Willis

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After I took the plunge and quit my job as a pathologist to write full time, the first novel I ever completed for adults was a psychological thriller. It is a genre near and dear to my heart. I love reading them, and love writing them even more. What is a psychological thriller? And what makes them so compelling? 

Let’s dig in.

Thriller is a genre of literature defined by the primary mood of dread and suspense. They aim to make readers unsettled, nervous, and eager to read what happens next. All fiction should elicit some amount of stress in the reader in the form of tension and conflict, but in a thriller novel, the stress is the main feature. They often feel cinematic and involve high stakes and dramatic plot points. 

In short, if it “thrills,” it is a thriller. 

In the introduction to Thriller, a major anthology published in June 2006, James Patterson says:

Thrillers provide such a rich literary feast. There are all kinds. The legal thriller, political, spy, action-adventure, medical, military, police, romantic, historical, religious, high-tech. The list goes on and on, with new variations constantly being invented. In fact, this openness to expansion is one of the genre's most enduring characteristics. But what gives the variety of thrillers a common ground is the intensity of emotions they create, particularly those of apprehension and exhilaration, of excitement and breathlessness, all designed to generate that all-important thrill. 

In other words, if a thriller doesn't thrill, it's not doing its job.

Thriller is a hybrid of mystery and horror, sharing a literary lineage with the epic and myth. Monsters, terror, and peril prevail. They are dark suspenseful plot-driven stories. 

In his excellent 2019 article for Writer’s Digest entitled, “The Differences Between a Crime, Mystery, and Thriller Novel” David Corbett again emphasizes the emotion: Of the three major suspense genres, thrillers are typically the most emotional, focusing on the fear, doubt, and dread of the hero as she faces some form of what Dean Koontz has deemed “terrible trouble.” 

There are many elements to thrillers that overlap with other novels of mystery and suspense but typically with an exaggerated atmosphere of menace and sudden violence, such as crime and often murder. A devastating crime is about to be committed or has been committed with the threat of another one looming. The villain is known, but his guilt is not certain—or the hero cannot accept the truth of his guilt. Uncertainty and doubt enhance the suspense.

The tension usually arises when the main character(s) is placed in a dangerous situation, and we spend the rest of the novel waiting to see if they’ll escape. Themes typically emphasize the dangerous world we live in, the vulnerability of the average person, and the inherent threat of the unknown. 

Thrillers can take place in exotic settings—think geopolitical and many spy thrillers—but most take place in ordinary suburbs and cities. The main character, the hero, is usually tough and resourceful, but essentially an ordinary person who is pitted against a villain determined to destroy them, their country, or the stability of society. 

Suspense is how an author builds tension throughout the story. It’s necessary in any genre, but it’s absolutely vital in thrillers. Ultimately, your goal for the reader is that they never want to put the book down. Each chapter ends with a cliffhanger, urgent question, or significant plot twist. And the plot must have high stakes. The characters must have a lot on the line—it needs to really matter they succeed. 

In a thriller, the plot should be driven by one big, important question. Think Chris Whitaker’s All the Colors from the Dark. The story begins when Patch is abducted when he is a young boy and held captive in a darkened room along with another young girl, Grace. Patch eventually escapes but spends the rest of his life searching for Grace. It is a complex, multilayered mystery involving missing persons, child kidnapping, and a serial killer weaving several plots lines, each with their own twist, but it is Patch’s quest that becomes the central question that drives much of the suspense throughout the novel. Who was Grace and what happened to her? 

While action does not need to be non-stop, suspense and intrigue need to be constant. There must be a sense of urgency to keep you turning the page.

This basic story structure emphasizes the importance of reader expectations: There is a distinct hero and a villain. The attack on the hero is relentless with escalating terror and dread. The hero must be vulnerable—not just physically but psychologically. 

So, what is a psychological thriller and what makes them different from other types of thrillers? 

The biggest questions revolve around the minds and behavior of the main characters. Common elements in include plot twists, psychology, obsession, and mind games. They incorporate elements of mystery and include themes of crime, morality, mental illness, substance abuse, multiple realities, and unreliable narrators. 

A psychological thriller finds the terror in madness and paranoia. Here the threat is diabolical but more contained, even intimate—usually targeting the protagonist and/or his family—and the hero is often relatively ordinary. 

It is the upending of our prosaic circumstances that disconcert us the most. This is why many psychological thrillers are domestic dramas set in the home, threatening our most cherished relationships such as husband and wife, mother and daughter, or sister and sister. The protagonist (and the reader) come to think if we are not safe in our own home, we must not be safe anywhere.  

Psychological thrillers generally, but not always, stay away from elements of fantasy or science fiction, focusing on events that could take place in real life. However, with advances in medical science and robotics, and the rise of AI, this is changing. Near-future psychological thrillers involving clones or robots gone awry can be eerily convincing. 

In summary, like all good stories, it comes down to setting and character with a problem. The reader must care about what happens next. Psychological thrillers are highly emotional and revolve around the minds and behavior of the main characters. Common elements in include plot twists, mind games, and unreliable narrators to create an atmosphere of menace with looming threats. They are suspenseful and filled with fear and dread to keep readers turning the page. 

In the next series of essays, I will discuss five specific elements we see in a psychological thriller. 

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Carol Willis (she/her) received her MFA in Writing (fiction) from Vermont College of Fine Arts. After receiving her medical doctorate from Texas A&M and an MBA in healthcare from George Washington University, she practiced child health and pathology before moving to Central Virginia. She is the author of a psychological thriller set in Chicago, a dark domestic drama exploring marriage, career, and identity. Her short stories have been published in multiple online journals and anthologies including Valparaiso Fiction Review, Inlandia: A Literary Journey, Living Crue Magazine, Crime in Old Dominion and others.