Once upon a time in a boarding school, a student was found dead in the library. The body had no visible wounds at first glance. The school was thrown into chaos. The police suspected everyone from the teachers to the students. As they investigated, they found a strange symbol drawn near the victim's hand. It turned out that a jealous classmate, who was envious of the victim's academic achievements, planned the murder. He used a slow - acting poison that left no obvious signs immediately.
Revenge is also very likely. A student who has been bullied for a long time might decide to take extreme measures to get back at their bullies. In a high school setting, bullying can be quite severe and the victim may feel that they have no other way to end their suffering.
Jealousy can be a big motive. For example, if one student is getting all the attention and good grades, another student might be driven to murder out of envy.
The overly competitive student is also a suspect. In a high - school environment, there's a lot of pressure to succeed. If this student was desperate to win a scholarship or a competition, they might have eliminated a rival in a fit of rage. They have the motivation and the presence on campus all the time.
One idea could be a murder in a small, isolated town where everyone seems to have a secret. The victim is a newcomer who might have uncovered something that threatened the town's hidden past. For example, a long - forgotten crime or an illegal business operation. Another idea is a murder at a high - society party. The guests are all wealthy and powerful, and any one of them could have a motive, like jealousy over a business deal or a love affair. A third idea is a murder in a spooky old mansion. There could be hidden passages and rooms, and the killer uses the layout of the mansion to their advantage to commit the crime and then disappear.
You could have a murder mystery where the victim is a journalist who was about to expose a big scandal. The killer could be anyone from a corrupt politician to a powerful business tycoon who wants to keep their secrets hidden. It would be interesting to see how the detective tries to uncover the web of lies and cover - ups.
One idea could be a murder in a small, seemingly idyllic town. The victim is a local shop owner. The detective discovers that the motive is related to a long - hidden family secret. Years ago, the shop owner's family had cheated another family out of a valuable piece of land, and the killer is seeking revenge for that injustice.
A murder occurs in a theater. The victim is an actor. The killer could be a jealous understudy who was constantly overshadowed by the victim. The understudy saw an opportunity when the actor was alone backstage and struck. The detective finds out by looking at the understudy's rehearsal schedule which shows they had ample opportunity to plan the murder.
Once upon a time in a small, gloomy town, a wealthy businessman was found dead in his locked study. The police suspected foul play. Detective Smith was called in. He noticed a half - empty glass of brandy on the desk and a strange symbol carved into the wooden floor. As he investigated, he discovered that the businessman had many enemies. His business partner had a motive as they had a recent argument over money. The partner's fingerprints were found on a letter opener near the body. In the end, the partner confessed to the murder, driven by greed.