The genres of mystery and thriller fiction are just as popular as romance. Just like a happy ending in a love story, a thriller also puts everything right in the end and gives us hope and conclusive answers.
Writing a mystery novel can be a fulfilling experience for a writer because it allows you to tell a thrilling story with many twists and turns while also completing the puzzle at the end. However, shaping your ideas into a coherent plot that keeps the readers on the edge till the last page can be challenging.
At WordLayouts, you will find a mystery novel outline template that can help you maintain a balance of suspense and satisfaction and develop a compelling plot. Whether you are a seasoned writer or writing your first story, use this comprehensive outline to write a mystery your readers will not forget.
Mystery Novel Outline Template
A mystery or thriller is a type of story that features an unresolved question or conflict to be resolved. The genre is broad; the plots are not confined to murders and crimes but can also be about finding some truth or hidden treasure. Due to the diversity of storylines, this genre is widely popular in both books and films.
At the heart of a mystery novel is a suspenseful story with twists and challenges that are cleverly overcome by the protagonist. Writing such a story comes with its own unique challenges. You have to maintain a balance of mystery and an intricate plot that also features an interesting protagonist and keeps the reader engaged. The plot twists and red herrings should be interesting but not too complicated to frustrate the readers. The mystery should also be a balance of realism and creativity and not something that seems highly unbelievable to the audience.
To address these unique challenges for writing a mystery novel, we have developed an outline template based on the three-act structure. Moreover, separate sections have been provided to help you describe the setting of your story and develop the protagonist and the antagonist in your novel.
In each section of this template, you will find helpful instructions to guide you in writing the details. We will now go over each section of this outline and explore how it will help you develop an intriguing story for your readers.
Setting
The setting in any story refers to the time, place, and environment where the story will take place. In a mystery novel, the setting influences the plot by shaping the atmosphere and determining the direction of the story. The location and environment can create hurdles in solving the mystery or help the protagonist.
For instance, In The Hound of the Baskervilles, the moorland setting serves as both a literal and figurative barrier that complicates Sherlock Holmes’ investigation. Further, the culture, social structure, and history can deeply influence the mystery’s plot and its characters. They give additional depth to the motivations and actions of the characters involved in the crime.
In this template, you will find prompts that will help you create a setting that enriches and guides your plot. The prompts are Place, Time Period, Key Location(s), Environmental Factor(s), and Mood to help address each element of the setting. With the help of these elements, you can create an interesting backdrop for your novel and create a more memorable world for the readers.
Main character/protagonist
The main character in your mystery or thriller novel would be the sleuth. He is not necessarily a professional detective but sometimes common people are put in circumstances that lead them to solve a mystery or a crime. Like in any other genre, the character has to have a relatable personality. However, the most important aspect for a protagonist in the mystery and thriller genre is that he must have integrity. He may have flaws and weaknesses but he must be someone we can trust in the end.
To help you develop a genuine and believable character for your novel, we have provided various prompts that address all aspects of character development. The prompts are Name, Background, Physical Description, Personality Traits, Motivation, Goals, Strengths, Weaknesses, and Internal Conflict.
Once you start describing these aspects of the protagonist, you will be able to develop a character that has an interesting backstory and weaknesses with which the readers can sympathize. The unique personality traits like Poirot’s mustache or mannerisms like Holmes’ pipe smoking will make the character memorable for the readers.
The strengths will help you define how the protagonist is able to handle the crime and solve the mystery, such as deductive reasoning, forensic expertise, or combat skills. The internal conflict, goals, and motivation help to explain why they are driven in their investigation or quest for justice.
Antagonist
The antagonist or villain in a mystery or thriller is the character who challenges the protagonist and creates tension and suspense in the story. The mystery and thriller genre gives plenty of creative space to develop the character of the antagonist. It can be someone who works behind the scenes or someone who fights the protagonist head-on.
The actions and schemes of the villain are central to driving your story, forcing the main character to react and add more depth to the plot. Some memorable villains are Hannibal Lecter in The Silence of The Lambs who evokes fear, and Professor Moriarty, who is equally intelligent as Sherlock Holmes and challenges his intellectual genius.
Just like the protagonist, the villain’s character must be developed with detail as well. He should be a believable person with a strong motivation to oppose the protagonist. They must also have a backstory to make the readers understand their actions and they should evoke a mix of fear, respect, and even pity in the audience.
To develop a powerful antagonist for your story, the outline template provides various prompts: Name, Relation to MC, Background, Physical Description, Personality Traits, Motivation, Goals, Strengths, Weaknesses, and Internal Conflict.
With the help of these prompts, you would be able to explain what drives the villain to do the negative things, their thought process, and their goals.
Secondary characters
The secondary characters in a story have a lesser role than the protagonist and the antagonists. However, these characters play an important part in driving the story forward and adding richness to the plot. Some common examples of secondary characters are red herrings, allies, suspects, informants, witnesses, a foil, and authority figures.
Developing these characters helps to build a richer plot for your story by building layers of suspense and intrigue. They are also helpful in moving the story forward for instance, by providing information and crucial assistance. The most famous example of a secondary character is Dr. Watson, who is a friend and confidante of Holmes and provides a different perspective on the cases being solved.
Creating secondary characters that are rich and multi-layered will necessitate creating characters that are part of the narrative and have their own backstory, motivations, and distinctive personalities.
Keeping in mind the significance of these characters, we have provided prompts in this template outline where you can define each aspect of your secondary charter’s personality. The prompts include Name, Personality Traits, Background, Goals, Strengths, Weaknesses, and Internal Conflicts. Addressing these aspects will lead you to develop characters who are genuine and who have a strong influence on the plot and solving the mystery.
Act I
The first act in any novel is the starting point of the story. In this part, you introduce the normal world and the main character. It creates a context for the changes that will take place later on in the story as the mystery unfolds. In a mystery novel, this part also introduces the mystery (murder, kidnapping, or threat) and the magnitude of the risk.
While writing the first act, you should focus on establishing a sense of intrigue and mystery to build curiosity in the readers and introduce the villain in a subtle way as well.
This outline template features all stages of the first act to help you organize your ideas and present a cohesive plot. The stages are Opening Scene, Inciting Incident, Call to Action, Initial Investigation, and First Conflict. We have included brief instructions on how to draft each step.
Some examples from popular mystery novels for each stage are discussed for more clarity:
- Opening Scene: In The Girl with the Dragon Tattoo by Stieg Larsson, journalist Mikael Blomkvist loses a libel case against a wealthy businessman. This introduces Blomkvist’s professional troubles and sets the stage for his eventual involvement in a much larger and darker mystery.
- Inciting Incident: In The Hound of the Baskervilles by Arthur Conan Doyle, Dr. Mortimer visits Sherlock Holmes and presents the case of Sir Charles Baskerville’s mysterious death, said to involve a supernatural hound.
- Call to Action: Symbologist Robert Langdon in The Da Vinci Code by Dan Brown is drawn into the investigation of the Louvre curator’s murder after being summoned to the scene and discovering cryptic symbols and a mysterious message.
- Initial Investigation: In the Woods by Tana French, Detective Rob Ryan starts investigating the murder of a young girl whose body is found in the same woods where two children disappeared decades ago.
- First Conflict: As Holmes and Watson investigate in The Hound of the Baskervilles by Arthur Conan Doyle, they encounter cryptic clues, such as the strange behavior of the Baskerville household staff and the mysterious moorland.
In each of these examples, you can observe how the opening scene introduces the mystery, how the stakes are explained, and how the protagonist becomes involved in solving the mystery. Furthermore, the first steps towards investigation create a sense of heightened tension as more information is revealed, which makes the reader want to read further.
ACT II
In the second act, the plot deepens, the readers are introduced to twists in the plot and the protagonist finds deeper clues leading to the solution of the mystery. As a writer, this could be the most challenging part of writing, as there are so many details that need to be introduced. The suspects, the main mystery, and the villain all form the core of the second act.
In this outline, we have provided the story elements that are part of the second act to help you focus on each element in detail. The elements are the following: Rising Tension, Suspect Confrontations, Midpoint Revelation, Escalating Danger, and Personal Stakes. For each of these elements, we have also included brief explanations. By dividing the second act into these sub-sections, you can organize your thoughts logically and maintain a balanced rhythm. Since the second act is the most complex part of the novel, you can easily manage all subplots and critical turning points by following the outline.
Some popular examples that explain these stages are discussed below:
- Rising Tension: Clarice Starling’s investigation of Buffalo Bill grows more tense as she relies on Hannibal Lecter’s cryptic insights in The Silence of the Lambs.
- Suspect Confrontations: In The Girl with the Dragon Tatoo, Blomkvist interviews members of the Vanger family, and each interaction reveals a mix of lies, secrets, and biases.
- Midpoint Revelation: In the novel The Gone Girl, the midpoint reveals that Amy is alive and has orchestrated her disappearance to frame Nick.
- Escalating Danger: In The Da Vinci Code, Langdon, and Sophie are pursued by Silas and the police as they uncover deeper layers of the secret society conspiracy.
- Personal Stakes: In the novel In the Woods by Tana French, Detective Rob Ryan’s investigation forces him to confront his own traumatic past and his work strains his personal relationships.
These elements work together to create an engaging plot that keeps the readers on the edge by increasing anticipation. You will be able to create a complex plot without boring the readers if the story follows a structured pattern and everything is logically linked in the puzzle.
Act III
The final act of a mystery novel is where all the pieces of the puzzle come together and the protagonist is able to solve the mystery. This section features the climax and confronts the antagonist, which is a pivotal moment in the story. Unlike other genres, in a mystery or thriller, the third act demands detailed explanations and is generally longer. To write a powerful ending, make sure that you maintain a sense of suspense till the end and provide a resolution that makes the reader both thrilled and satisfied.
This template outline guides you in writing the final act with finesse and creating a deep impression on the readers through prompts for each stage of this section of the novel. The prompts are Crisis, Climax, Resolution, and Aftermath. These prompts create a coherent flow in the narrative and make sure that no scene is rushed and the story ends on an emotionally charged note. You can explain the mystery in a clear and logical manner by concentrating on each section separately, which will make your story credible and captivating.
Some of the most iconic and memorable works of fiction come from the mystery and thriller genres. We have all read an Agatha Christie mystery or been engrossed in James Bond’s world-saving mission at some point.
Telling a riveting story can be a deeply rewarding experience if it is managed properly. This template is specifically developed to help you navigate the challenges of writing a mystery novel and stay motivated and focused. Each section has genre-specific prompts that make sure that your ideas are properly organized and that you create an intriguing plot with rich emotional intensity. From the first scene to the stunning revelation at the end, the outline template provides step-by-step instructions for writing it all effectively. Whether you want to write about true crime, a whodunit, a cozy mystery, or a detective story, this outline template can be effectively used to develop a thrilling plot.
The template is available in multiple formats, like DOCX, DOTX, ODT, and Google Docs. Use this outline and showcase your mastery as a mystery novel writer!




