Now murder can be a popular topic in any mystery, but here are a few writing prompts where the primary mystery is solving the murder itself. They take a lot more research in specificity around the particular crime-fighting unit question, but when done right they bring a whole other level a reality to your mystery plot.
Wrap up the story with the solution to the puzzle and have the main character be a hero or change in a positive way. In the series of novels about this detective, she usually solves crimes committed at or around the houses she and her crew have been hired to clean. Or the whisperers behind you might be talking about the strange thing outside the window.
List the things you're not so good at and include them in your character's makeup. Have the adults not believe the main character when he's trying to tell them about the mystery, so he has to solve it himself or with his friends.
A series of break-ins terrorize a small town, but what makes these break-ins so scary is that nothing is stolen or moved.
At a political fundraiser for an up-and-coming congressman, a jovial night turns sideways when he disappears. However, the beautiful cottage seems to be haunted.
A young crime stoppers club who put on elaborate reenactments of real-life crimes the size to play out and act investigation, but when they uncover new evidence in the case they become the only people who can solve it.
A series of Middle Eastern banks are robbed however none of the cash taken. For example, you could describe your bedroom, filled with sports equipment or games, and find something mysterious hidden among these items.
Here are some ways to help you describe the classroom setting: Name something your character sees, such as her messy desk, the science charts on the wall, or the clock that never seems to move fast enough.