What could have led to this crime scene? What motivation would cause someone to commit the crime, or to frame someone else? What kind of person would follow through on that motivation? Use Who? What? When? Where? Why? How? questions to get you started: Who committed the crime and who did they do it to? What was the crime? When did it happen (morning, evening, afternoon, dead of night)? Where did it happen? Why did they do it? How did they do it?
Recognize that the size of the place will influence the development of your story. For example, in a large city or busy public place, you will have lots of opportunities to introduce witnesses. However, in a “locked-room mystery” (one where all the characters seem to be present in the same room throughout the occurrence of the crime), you will likely have no external witnesses, but may be able to draw upon your characters opinions and biases of each other. Focus on the elements of your setting that are essential to the story. For example, is weather essential? If it is, write about it in great detail. If it is not, only mention it briefly or leave it out altogether. A dark, gritty setting adds atmosphere and works well with stories centered on organized crime. Setting a crime in an idyllic, ordinary town adds its own kind of chill.
Some characters should be potential suspects for having committed the crime (and at least one should actually be guilty of the crime), some should be supporting characters that serve to make the storyline interesting (a love interest or meddling mother-in-law, perhaps), and one (or more) should be focused on solving the mystery. Well-written characters will have motives for acting in ways that further the plot. Okay, the gritty noir detective or genius investigator is an option, but come up with alternatives or twists. Make the crime matter personally to the protagonist, to raise the emotional stakes. This could be related to the protagonist’s mysterious past, a close friend or family member in danger, or the fate of the town, country, or world. [1] X Research source
Describe your villain well, but not too well. You don’t want your reader to guess right from the beginning of the story who is the culprit. Your reader may become suspicious if you spend a disproportionate amount of time describing one character. You may want to make your villain someone that has been slightly suspicious all along. On the other hand, you may want to make the revelation of the culprit or criminal a complete shock. “Framing” someone throughout the story is a surefire way to keep your readers hooked to your mystery short stories. Instead of a villain, consider including a sidekick. Maybe your sleuth has a friend or partner that will help her sort the clues and point out things that she misses. [3] X Research source No one says the sleuth has to do it all alone! What if the sidekick and villain end up being one in the same? Think of the basics. Male or female? What is the detective’s name? How old are they? What do they look like (hair color, eye color, and skin tone)? Where are they from? Where are they living when your story starts? How did they become part of the story? Are they victims? Are they the cause of the problems in your story?
Present an opportunity for mystery. Create a situation in which a crime can reasonably occur and one that you will be able to reasonably recreate yourself. Did all the power go out in the city due to a thunderstorm? Was a door or a safe accidentally left unlocked? Paint a vivid picture of the situation surrounding the occurrence of the crime that will be the focus of your mystery. Don’t underestimate the power of the “backdrop” for the crime. [4] X Research source An intricate understanding of the setting in which the crime takes place is an important tool that will help when it comes to developing your narrative. Here are some suggestions for crimes: Something has been stolen from the classroom, Something is missing from your bookbag, Something strange is found on the baseball field, Someone has stolen the class pet, Someone is sending you strange notes, Someone has broken into the Science materials closet, someone has written on the bathroom wall, someone has tracked red mud into the building.
You should include evidence processing skills such as fingerprinting, toxicology, handwriting analysis, blood spatter patterns, etc. The detective work must be good. Develop how your detective or protagonist ultimately solves the case, keeping their personality and qualities in mind. Make sure it isn’t cheesy or too obvious.
If you want to write about what happens before the crime, you can go back in time for the second chapter, adding a subheading such as “one week earlier. "
This is especially important for the biggest reveal — whodunnit? — and the wrong choice can ruin a novel for a lot of readers. The villain should either be a suspect or demonstrate enough suspicious behavior that a clever reader can guess the identity.