One day, the police found a man dead inside a hut. In his left hand, he's holding a gun. In his right hand, he has a recording. When the recording is played, the police hear the man talking about how horrible life is and how he wants it to end. The recording ends with a gunshot. The police are about to call it a suicide until you point out a very important clue. What is it?
The recording played a gunshot inside it. If the man committed suicide, he wouldn't have been able to stop the recording after he pulled the trigger.
A man was found dead next to a 13 story building. The police say it was a suicide, but you say it was a homicide (someone killed him). To prove this, you go to each floor on the building, open the window, and toss a penny out. You do this to each floor until you reach the 13th floor, open the window, and toss a penny out. How does this prove it wasn't a suicide?
If the man committed suicide, he would've left the window open and you wouldn't have had to open it.
There is a dead man in the middle of a field, nothing is around him and there are no footprints of any sort. There is an unopened package next to him. How did he die? HINT: As he approached the field he knew he was going to die.